diff --git a/core/modules/comment/comment.module b/core/modules/comment/comment.module
index 1ab6691..2fba1b3 100644
--- a/core/modules/comment/comment.module
+++ b/core/modules/comment/comment.module
@@ -1353,8 +1353,6 @@ function template_preprocess_comment(&$variables) {
     $permalink_uri_parent->setOption('attributes', $attributes);
     $variables['parent_title'] = \Drupal::linkGenerator()->generateFromUrl($comment_parent->getSubject(), $permalink_uri_parent);
     $variables['parent_permalink'] = \Drupal::linkGenerator()->generateFromUrl(t('Parent permalink'), $permalink_uri_parent);
-    $variables['parent'] = t('In reply to !parent_title by !parent_username',
-        array('!parent_username' => $variables['parent_author'], '!parent_title' => $variables['parent_title']));
   }
   else {
     $variables['parent_comment'] = '';
@@ -1363,7 +1361,6 @@ function template_preprocess_comment(&$variables) {
     $variables['parent_changed'] = '';
     $variables['parent_title'] = '';
     $variables['parent_permalink'] = '';
-    $variables['parent'] = '';
   }
 
   // Helpful $content variable for templates.
diff --git a/core/modules/comment/templates/comment.html.twig b/core/modules/comment/templates/comment.html.twig
index 4501238..d7710a6 100644
--- a/core/modules/comment/templates/comment.html.twig
+++ b/core/modules/comment/templates/comment.html.twig
@@ -49,15 +49,10 @@
  * - parent_changed: Equivalent to changed for the parent comment.
  * - parent_title: Equivalent to title for the parent comment.
  * - parent_permalink: Equivalent to permalink for the parent comment.
- * - parent: A text string of parent comment submission information created from
- *   'parent_author' and 'parent_created' during template_preprocess_comment().
- *   This information is presented to help screen readers follow lengthy
- *   discussion threads. You can hide this from sighted users using the class
- *   visually-hidden.
  *
  * These two variables are provided for context:
  * - comment: Full comment object.
- * - entity: Entity the comments are attached to.
+ * - commented_entity: Entity the comments are attached to.
  *
  * @see template_preprocess_comment()
  *
@@ -86,6 +81,9 @@
       Indicate the semantic relationship between parent and child comments
       for accessibility. The list is difficult to navigate in a screen
       reader without this information.
+      This information is presented to help screen readers follow lengthy
+      discussion threads. You can hide this from sighted users using the class
+      visually-hidden.
     #}
     {% if parent_comment %}
       <p class="parent visually-hidden">{{ "In reply to !parent_title by !parent_author"|t({ '!parent_title': parent_title, '!parent_author': parent_author }) }}</p>