diff --git c/core/modules/system/system.admin.inc w/core/modules/system/system.admin.inc
index 05c2705..d2491fd 100644
--- c/core/modules/system/system.admin.inc
+++ w/core/modules/system/system.admin.inc
@@ -11,28 +11,6 @@
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 
 /**
- * Provide a single block from the administration menu as a page.
- *
- * This function is often a destination for these blocks.
- * For example, 'admin/structure/types' needs to have a destination to be valid
- * in the Drupal menu system, but too much information there might be
- * hidden, so we supply the contents of the block.
- *
- * @return
- *   The output HTML.
- */
-function system_admin_menu_block_page() {
-  $item = menu_get_item();
-  if ($content = system_admin_menu_block($item)) {
-    $output = theme('admin_block_content', array('content' => $content));
-  }
-  else {
-    $output = t('You do not have any administrative items.');
-  }
-  return $output;
-}
-
-/**
  * Menu callback; Set the default theme.
  */
 function system_theme_default() {