diff --git a/core/modules/user/lib/Drupal/user/Form/UserLoginForm.php b/core/modules/user/lib/Drupal/user/Form/UserLoginForm.php
index a80dbdc..9edba58 100644
--- a/core/modules/user/lib/Drupal/user/Form/UserLoginForm.php
+++ b/core/modules/user/lib/Drupal/user/Form/UserLoginForm.php
@@ -190,7 +190,7 @@ public function validateAuthentication(array &$form, array &$form_state) {
         }
       }
       // We are not limited by flood control, so try to authenticate.
-      // Set $form_state['uid'] as a flag for user_login_final_validate().
+      // Set $form_state['uid'] as a flag for self::validateFinal().
       $form_state['uid'] = user_authenticate($form_state['values']['name'], $password);
     }
   }
diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index 05a516a..2d9b7a0 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -1139,28 +1139,6 @@ function user_page_title($account) {
 }
 
 /**
- * Set up a series for validators which check for blocked users,
- * then authenticate against local database, then return an error if
- * authentication fails. Distributed authentication modules are welcome
- * to use hook_form_alter() to change this series in order to
- * authenticate against their user database instead of the local users
- * table. If a distributed authentication module is successful, it
- * should set $form_state['uid'] to a user ID.
- *
- * We use three validators instead of one since external authentication
- * modules usually only need to alter the second validator.
- *
- * @see user_login_name_validate()
- * @see user_login_authenticate_validate()
- * @see user_login_final_validate()
- * @return array
- *   A simple list of validate functions.
- */
-function user_login_default_validators() {
-  return array('user_login_name_validate', 'user_login_authenticate_validate', 'user_login_final_validate');
-}
-
-/**
  * Try to validate the user's login credentials locally.
  *
  * @param $name