diff --git a/core/modules/ckeditor/ckeditor.module b/core/modules/ckeditor/ckeditor.module
index 143a7b0..80af8e9 100644
--- a/core/modules/ckeditor/ckeditor.module
+++ b/core/modules/ckeditor/ckeditor.module
@@ -65,13 +65,6 @@ function ckeditor_ckeditor_css_alter(array &$css, Editor $editor) {
     $css[] = drupal_get_path('module', 'filter') . '/css/filter.caption.css';
   }
 
-  // Add the filter caption CSS if the text format associated with this text
-  // editor uses the filter_align filter. This is used by the included
-  // CKEditor DrupalImageCaption plugin.
-  if ($editor->getFilterFormat()->filters('filter_align')->status) {
-    $css[] = drupal_get_path('module', 'ckeditor') . '/css/plugins/drupalimagecaption/ckeditor.drupalimagecaption.css';
-  }
-
   // @todo: Remove in https://www.drupal.org/node/2645100.
   /** @var \Drupal\ckeditor\CKEditorPluginManager $ckeditor_plugin_manager */
   $ckeditor_plugin_manager = \Drupal::service('plugin.manager.ckeditor.plugin');