fix tests

Author: xabbuh

src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/SecurityExtensionTest.php

@@ -179,7 +179,6 @@ public function testMissingProviderForListener()
                 'ambiguous' => array(
                     'http_basic' => true,
                     'form_login' => array('provider' => 'second'),
-                    'logout_on_user_change' => true,
                 ),
             ),
         ));