Remove outdated comment

tests/modules/core/lib/Auth/Process/ScopeFromAttributeTest.php

@@ -102,8 +102,6 @@ class Test_Core_Auth_Process_ScopeFromAttribute extends TestCase
 
     /*
      * When the source attribute doesn't have a scope, a warning is emitted
-     * NOTE: currently disabled: this triggers a warning and a warning
-     * wants to start a session which we cannot do in phpunit. How to fix?
      */
     public function testNoAt()
     {