diff -u b/core/modules/user/src/Tests/UserBlocksTest.php b/core/modules/user/src/Tests/UserBlocksTest.php
--- b/core/modules/user/src/Tests/UserBlocksTest.php
+++ b/core/modules/user/src/Tests/UserBlocksTest.php
@@ -7,8 +7,6 @@
 
 namespace Drupal\user\Tests;
 
-use Drupal\Component\Utility\SafeMarkup;
-use Drupal\Core\Render\SafeString;
 use Drupal\simpletest\WebTestBase;
 
 /**