diff --git a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
index 4d86f8d..016ffd0 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
@@ -593,7 +593,6 @@ protected function drupalLogout() {
    */
   protected function setUp() {
     global $user, $conf;
-    $language_interface = language(LANGUAGE_TYPE_INTERFACE);
 
     // When running tests through the Simpletest UI (vs. on the command line),
     // Simpletest's batch conflicts with the installer's batch. Batch API does