Legacy procedural functions removed from filter.module

When text formats were converted to configurable entities and filters were converted to plugins, many procedural wrappers were left in place.

The following functions have been removed:

filter_format_load()
filter_format_exists()
filter_permission_name()
filter_list_format()
filter_access()

Loading a text format

Drupal 7

$restricted_html_format = filter_format_load('restricted_html');

Drupal 8

use Drupal\filter\Entity\FilterFormat;

$restricted_html_format = FilterFormat::load('restricted_html');

Checking for an existing text format

Drupal 7

if (filter_format_exists('restricted_html')) {
}

Drupal 8

if ( FilterFormat::load('restricted_html')) {
}

Finding the permission name for a text format

Drupal 7

$permission_name = filter_permission_name($restricted_html_format);

Drupal 8

$permission_name = $restricted_html_format->getPermissionName();

Retrieve the filters for a text format

Drupal 7

$filters = filter_list_format($restricted_html_format->format);

Drupal 8

$filters = $restricted_html_format->filters();

Checking access for a text format

Drupal 7

if (filter_access($restricted_html_format)) {
}
if (filter_access($restricted_html_format, $account)) {
}

Drupal 8

if ($restricted_html_format->access('view')) {
}
if ($restricted_html_format->access('view', $account)) {
}