diff --git a/core/modules/language/language.local_tasks.yml b/core/modules/language/language.local_tasks.yml
index 690d3f8..fc5f30c 100644
--- a/core/modules/language/language.local_tasks.yml
+++ b/core/modules/language/language.local_tasks.yml
@@ -1,9 +1,3 @@
-system.date_format_language_overview:
-  title: 'Localize'
-  route_name: system.date_format_language_overview
-  tab_root_id: system.date_format_list
-  weight: -8
-
 language.admin_overview:
   title: 'List'
   route_name: language.admin_overview
diff --git a/core/modules/language/tests/Drupal/language/Tests/Menu/LanguageLocalTasks.php b/core/modules/language/tests/Drupal/language/Tests/Menu/LanguageLocalTasks.php
index cd3cd2f..204b8cd 100644
--- a/core/modules/language/tests/Drupal/language/Tests/Menu/LanguageLocalTasks.php
+++ b/core/modules/language/tests/Drupal/language/Tests/Menu/LanguageLocalTasks.php
@@ -60,14 +60,4 @@ public function testLanguageEditLocalTasks() {
     ));
   }
 
-  /**
-   * Tests language date format local tasks.
-   */
-  public function testLanguageDateLocalTasks() {
-    $this->assertLocalTasks('system.date_format_language_overview', array(
-      0 => array('system.date_format_language_overview'),
-    ));
-  }
-
-
 }