Issue #2080597 by sandergo90, mrsinguyen: Remove Unused local variable from...

Issue #2080597 by sandergo90, mrsinguyen: Remove Unused local variable  from /core/modules/user/lib/Drupal/user/Tests/UserLanguageTest.php.

core/modules/user/lib/Drupal/user/Tests/UserLanguageTest.php

@@ -33,8 +33,6 @@ public static function getInfo() {
    * Test if user can change their default language.
    */
   function testUserLanguageConfiguration() {
-    global $base_url;
-
     // User to add and remove language.
     $admin_user = $this->drupalCreateUser(array('administer languages', 'access administration pages'));
     // User to change their default language.