diff -u b/core/modules/entity_reference/lib/Drupal/entity_reference/Type/ConfigurableEntityReferenceItem.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Type/ConfigurableEntityReferenceItem.php
--- b/core/modules/entity_reference/lib/Drupal/entity_reference/Type/ConfigurableEntityReferenceItem.php
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Type/ConfigurableEntityReferenceItem.php
@@ -47,8 +47,8 @@
    * Duplicated from \Drupal\field\Plugin\Type\FieldType\ConfigFieldItemBase,
    * since we cannot extend it.
    */
-  public function __construct(array $definition, $plugin_id, array $plugin_definition, $name = NULL, TypedDataInterface $parent = NULL) {
-    parent::__construct($definition, $plugin_id, $plugin_definition, $name, $parent);
+  public function __construct(array $definition, $name = NULL, TypedDataInterface $parent = NULL) {
+    parent::__construct($definition, $name, $parent);
     if (isset($definition['instance'])) {
       $this->instance = $definition['instance'];
     }
diff -u b/core/modules/field/field.attach.inc b/core/modules/field/field.attach.inc
--- b/core/modules/field/field.attach.inc
+++ b/core/modules/field/field.attach.inc
@@ -437,147 +437,6 @@
 }
 
 /**
- * Invokes a field hook across fields on multiple entities.
- *
- * @param $op
- *   Possible operations include:
- *   - load
- *   - prepare_view
- *   For all other operations, use _field_invoke() / field_invoke_default()
- *   instead.
- * @param $entity_type
- *   The type of entities in $entities; e.g. 'node' or 'user'.
- * @param $entities
- *   An array of entities, keyed by entity ID.
- * @param $a
- *   - The $age parameter in the 'load' operation.
- *   - Otherwise NULL.
- * @param $b
- *   Currently always NULL.
- * @param $options
- *   An associative array of additional options, with the following keys:
- *   - field_name: The name of the field whose operation should be invoked. By
- *     default, the operation is invoked on all the fields in the entity's
- *     bundle. NOTE: This option is not compatible with the 'deleted' option;
- *     the 'field_id' option should be used instead.
- *   - field_id: The ID of the field whose operation should be invoked. By
- *     default, the operation is invoked on all the fields in the entity's
- *     bundles.
- *   - default: A boolean value, specifying which implementation of the
- *     operation should be invoked.
- *     - if FALSE (default), the field types implementation of the operation
- *       will be invoked (hook_field_[op])
- *     - If TRUE, the default field implementation of the field operation will
- *       be invoked (field_default_[op])
- *     Internal use only. Do not explicitely set to TRUE, but use
- *     _field_invoke_multiple_default() instead.
- *   - deleted: If TRUE, the function will operate on deleted fields as well as
- *     non-deleted fields. If unset or FALSE, only non-deleted fields are
- *     operated on.
- *   - langcode: A language code or an array of arrays of language codes keyed
- *     by entity ID and field name. It will be used to narrow down to a single
- *     value the available languages to act on.
- *
- * @return
- *   An array of returned values keyed by entity ID.
- */
-function _field_invoke_multiple($op, $entity_type, $entities, &$a = NULL, &$b = NULL, $options = array()) {
-  // Merge default options.
-  $default_options = array(
-    'default' => FALSE,
-    'deleted' => FALSE,
-    'langcode' => NULL,
-  );
-  $options += $default_options;
-
-  $fields = array();
-  $grouped_instances = array();
-  $grouped_entities = array();
-  $grouped_items = array();
-  $return = array();
-
-  // Go through the entities and collect the fields on which the hook should be
-  // invoked.
-  //
-  // We group fields by ID, not by name, because this function can operate on
-  // deleted fields which may have non-unique names. However, entities can only
-  // contain data for a single field for each name, even if that field
-  // is deleted, so we reference field data via the
-  // $entity->$field_name property.
-  foreach ($entities as $entity) {
-    // Determine the list of instances to iterate on.
-    $instances = _field_invoke_get_instances($entity_type, $entity->bundle(), $options);
-    $id = $entity->id();
-
-    foreach ($instances as $instance) {
-      $field_id = $instance['field_id'];
-      $field_name = $instance['field_name'];
-      $field = field_info_field_by_id($field_id);
-      $function = $options['default'] ? 'field_default_' . $op : $field['module'] . '_field_' . $op;
-      if (function_exists($function)) {
-        // Add the field to the list of fields to invoke the hook on.
-        if (!isset($fields[$field_id])) {
-          $fields[$field_id] = $field;
-        }
-        // Extract the field values into a separate variable, easily accessed
-        // by hook implementations.
-        // Unless a language code suggestion is provided we iterate on all the
-        // available language codes.
-        $available_langcodes = field_available_languages($entity_type, $field);
-        $langcode = !empty($options['langcode'][$id]) ? $options['langcode'][$id] : $options['langcode'];
-        $langcodes = _field_language_suggestion($available_langcodes, $langcode, $field_name);
-        foreach ($langcodes as $langcode) {
-          $grouped_items[$field_id][$langcode][$id] = isset($entity->{$field_name}[$langcode]) ? $entity->{$field_name}[$langcode] : array();
-          // Group the instances and entities corresponding to the current
-          // field.
-          $grouped_instances[$field_id][$langcode][$id] = $instance;
-          $grouped_entities[$field_id][$langcode][$id] = $entities[$id];
-        }
-      }
-    }
-    // Initialize the return value for each entity.
-    $return[$id] = array();
-  }
-
-  // For each field, invoke the field hook and collect results.
-  foreach ($fields as $field_id => $field) {
-    $field_name = $field['field_name'];
-    $function = $options['default'] ? 'field_default_' . $op : $field['module'] . '_field_' . $op;
-    // Iterate over all the field translations.
-    foreach ($grouped_items[$field_id] as $langcode => &$items) {
-      $entities = $grouped_entities[$field_id][$langcode];
-      $instances = $grouped_instances[$field_id][$langcode];
-      $results = $function($entity_type, $entities, $field, $instances, $langcode, $items, $a, $b);
-      if (isset($results)) {
-        // Collect results by entity.
-        // For hooks with array results, we merge results together.
-        // For hooks with scalar results, we collect results in an array.
-        foreach ($results as $id => $result) {
-          if (is_array($result)) {
-            $return[$id] = array_merge($return[$id], $result);
-          }
-          else {
-            $return[$id][] = $result;
-          }
-        }
-      }
-    }
-
-    // Populate field values back in the entities, but avoid replacing missing
-    // fields with an empty array (those are not equivalent on update).
-    foreach ($grouped_entities[$field_id] as $langcode => $entities) {
-      foreach ($entities as $id => $entity) {
-        if ($grouped_items[$field_id][$langcode][$id] !== array() || isset($entity->{$field_name}[$langcode])) {
-          $entity->{$field_name}[$langcode] = $grouped_items[$field_id][$langcode][$id];
-        }
-      }
-    }
-  }
-
-  return $return;
-}
-
-/**
  * Invoke field.module's version of a field hook.
  *
  * This function invokes the field_default_[op]() function.
@@ -592,62 +451,6 @@
 }
 
 /**
- * Invoke field.module's version of a field hook on multiple entities.
- *
- * This function invokes the field_default_[op]() function.
- * Use _field_invoke_multiple() to invoke the field type implementation,
- * hook_field_[op]().
- *
- * @param $op
- *   Possible operations include:
- *   - load
- *   - prepare_view
- *   For all other operations, use _field_invoke() / field_invoke_default()
- *   instead.
- * @param $entity_type
- *   The type of entities in $entities; e.g. 'node' or 'user'.
- * @param $entities
- *   An array of entities, keyed by entity ID.
- * @param $a
- *   - The $age parameter in the 'load' operation.
- *   - Otherwise NULL.
- * @param $b
- *   Currently always NULL.
- * @param $options
- *   An associative array of additional options, with the following keys:
- *   - field_name: The name of the field whose operation should be invoked. By
- *     default, the operation is invoked on all the fields in the entity's
- *     bundle. NOTE: This option is not compatible with the 'deleted' option;
- *     the 'field_id' option should be used instead.
- *   - field_id: The ID of the field whose operation should be invoked. By
- *     default, the operation is invoked on all the fields in the entity's
- *     bundles.
- *   - default': A boolean value, specifying which implementation of the
- *     operation should be invoked.
- *     - if FALSE (default), the field types implementation of the operation
- *       will be invoked (hook_field_[op])
- *     - If TRUE, the default field implementation of the field operation will
- *       be invoked (field_default_[op])
- *     Internal use only. Do not explicitely set to TRUE, but use
- *     _field_invoke_multiple_default() instead.
- *   - deleted: If TRUE, the function will operate on deleted fields as well as
- *     non-deleted fields. If unset or FALSE, only non-deleted fields are
- *     operated on.
- *   - language: A language code or an array of arrays of language codes keyed
- *     by entity ID and field name. It will be used to narrow down to a single
- *     value the available languages to act on.
- *
- * @return
- *   An array of returned values keyed by entity ID.
- *
- * @see _field_invoke_multiple()
- */
-function _field_invoke_multiple_default($op, $entity_type, $entities, &$a = NULL, &$b = NULL, $options = array()) {
-  $options['default'] = TRUE;
-  return _field_invoke_multiple($op, $entity_type, $entities, $a, $b, $options);
-}
-
-/**
  * Retrieves a list of instances to operate on.
  *
  * Helper for _field_invoke().
diff -u b/core/modules/field/tests/modules/field_test/field_test.module b/core/modules/field/tests/modules/field_test/field_test.module
--- b/core/modules/field/tests/modules/field_test/field_test.module
+++ b/core/modules/field/tests/modules/field_test/field_test.module
@@ -84,25 +84,6 @@
 }
 
 /**
- * Generic op to test _field_invoke_multiple behavior.
- *
- * This simulates a multiple field operation callback to be invoked by
- * _field_invoke_multiple().
- */
-function field_test_field_test_op_multiple($entity_type, $entities, $field, $instances, $langcode, &$items) {
-  $result = array();
-  foreach ($entities as $id => $entity) {
-    // Entities, instances and items are assumed to be consistently grouped by
-    // language. To verify this we try to access all the passed data structures
-    // by entity id. If they are grouped correctly, one entity, one instance and
-    // one array of items should be available for each entity id.
-    $field_name = $instances[$id]['field_name'];
-    $result[$id] = array($langcode => hash('sha256', serialize(array($entity_type, $entity, $field_name, $langcode, $items[$id]))));
-  }
-  return $result;
-}
-
-/**
  * Implements hook_field_available_languages_alter().
  */
 function field_test_field_available_languages_alter(&$langcodes, $context) {
--- a/core/modules/field/field.multilingual.inc
+++ b/core/modules/field/field.multilingual.inc
@@ -34,10 +34,9 @@
  * property returned by field_info_field() and whether the entity type the field
  * is attached to supports translation.
  *
- * By default, _field_invoke() and _field_invoke_multiple() process a field in
- * all available languages, unless they are given a language code suggestion.
- * Based on that suggestion, _field_language_suggestion() determines the
- * languages to act on.
+ * By default, _field_invoke() processes a field in all available languages,
+ * unless they are given a language code suggestion. Based on that suggestion,
+ * _field_language_suggestion() determines the languages to act on.
  *
  * Most field_attach_*() functions act on all available language codes, except
  * for the following:
only in patch2:
unchanged:
--- a/core/modules/field/lib/Drupal/field/Tests/TranslationTest.php
+++ b/core/modules/field/lib/Drupal/field/Tests/TranslationTest.php
@@ -139,79 +139,6 @@ function testFieldInvoke() {
   }
 
   /**
-   * Test the multilanguage logic of _field_invoke_multiple().
-   */
-  function testFieldInvokeMultiple() {
-    // Enable field translations for the entity.
-    field_test_entity_info_translatable('test_entity', TRUE);
-
-    $values = array();
-    $options = array();
-    $entities = array();
-    $entity_type = 'test_entity';
-    $entity_count = 5;
-    $available_langcodes = field_available_languages($this->entity_type, $this->field);
-
-    for ($id = 1; $id <= $entity_count; ++$id) {
-      $entity = field_test_create_entity($id, $id, $this->instance['bundle']);
-      $langcodes = $available_langcodes;
-
-      // Populate some extra languages to check whether _field_invoke()
-      // correctly uses the result of field_available_languages().
-      $extra_langcodes = mt_rand(1, 4);
-      for ($i = 0; $i < $extra_langcodes; ++$i) {
-        $langcodes[] = $this->randomName(2);
-      }
-
-      // For each given language provide some random values.
-      $language_count = count($langcodes);
-      for ($i = 0; $i < $language_count; ++$i) {
-        $langcode = $langcodes[$i];
-        // Avoid to populate at least one field translation to check that
-        // per-entity language suggestions work even when available field values
-        // are different for each language.
-        if ($i !== $id) {
-          for ($delta = 0; $delta < $this->field['cardinality']; $delta++) {
-            $values[$id][$langcode][$delta]['value'] = mt_rand(1, 127);
-          }
-        }
-        // Ensure that a language for which there is no field translation is
-        // used as display language to prepare per-entity language suggestions.
-        elseif (!isset($display_langcode)) {
-          $display_langcode = $langcode;
-        }
-      }
-
-      $entity->{$this->field_name} = $values[$id];
-      $entities[$id] = $entity;
-
-      // Store per-entity language suggestions.
-      $options['langcode'][$id] = field_language($entity, NULL, $display_langcode);
-    }
-
-    $grouped_results = _field_invoke_multiple('test_op_multiple', $entity_type, $entities);
-    foreach ($grouped_results as $id => $results) {
-      foreach ($results as $langcode => $result) {
-        if (isset($values[$id][$langcode])) {
-          $hash = hash('sha256', serialize(array($entity_type, $entities[$id], $this->field_name, $langcode, $values[$id][$langcode])));
-          // Check whether the parameters passed to _field_invoke_multiple()
-          // were correctly forwarded to the callback function.
-          $this->assertEqual($hash, $result, format_string('The result for entity %id/%language is correctly stored.', array('%id' => $id, '%language' => $langcode)));
-        }
-      }
-      $this->assertEqual(count($results), count($available_langcodes), format_string('No unavailable language has been processed for entity %id.', array('%id' => $id)));
-    }
-
-    $null = NULL;
-    $grouped_results = _field_invoke_multiple('test_op_multiple', $entity_type, $entities, $null, $null, $options);
-    foreach ($grouped_results as $id => $results) {
-      foreach ($results as $langcode => $result) {
-        $this->assertTrue(isset($options['langcode'][$id]), format_string('The result language code %langcode for entity %id was correctly suggested (display language: %display_langcode).', array('%id' => $id, '%langcode' => $langcode, '%display_langcode' => $display_langcode)));
-      }
-    }
-  }
-
-  /**
    * Test translatable fields storage/retrieval.
    */
   function testTranslatableFieldSaveLoad() {