diff --git a/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php b/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
index 1f371fa..bcb180a 100644
--- a/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
+++ b/core/tests/Drupal/Tests/Core/Utility/LinkGeneratorTest.php
@@ -453,11 +453,3 @@ public function testGenerateActive() {
 }
 
 }
-namespace {
-  // @todo Remove this once there is a service for drupal_is_front_page().
-  if (!function_exists('drupal_is_front_page')) {
-    function drupal_is_front_page() {
-      return FALSE;
-    }
-  }
-}