Issue #2012312 by tim.plunkett: Remove legacy code from filter.module.

core/modules/block/lib/Drupal/block/Tests/BlockTestBase.php

core/modules/ckeditor/ckeditor.api.php

core/modules/editor/editor.routing.yml

core/modules/editor/lib/Drupal/editor/Entity/Editor.php

core/modules/filter/filter.module

core/modules/filter/filter.routing.yml

core/modules/filter/filter.services.yml

...les/filter/lib/Drupal/filter/Access/FilterAccessCheck.php

...es/filter/lib/Drupal/filter/Access/FormatDisableCheck.php

.../modules/filter/lib/Drupal/filter/Entity/FilterFormat.php

...filter/lib/Drupal/filter/FilterFormatAccessController.php

...lter/lib/Drupal/filter/FilterFormatFormControllerBase.php

...odules/filter/lib/Drupal/filter/FilterFormatInterface.php

.../modules/filter/lib/Drupal/filter/Tests/FilterAPITest.php

...odules/filter/lib/Drupal/filter/Tests/FilterAdminTest.php

...modules/filter/lib/Drupal/filter/Tests/FilterCrudTest.php

...ilter/lib/Drupal/filter/Tests/FilterDefaultConfigTest.php

...ilter/lib/Drupal/filter/Tests/FilterDefaultFormatTest.php

...filter/lib/Drupal/filter/Tests/FilterFormatAccessTest.php

...ter/lib/Drupal/filter/Tests/FilterHtmlImageSecureTest.php