fix tests for the AbstractVoter class

* The `LegacyAbstractVoterTest` class is not needed anymore, tests have been moved to the `AbstractVoterTest` class tagging them with the legacy group. * Tests are applied on `stdClass` object instances. Thus, the legacy voter fixture class must not support `AbstractVoterTest_Object` instances, but support `stdClass` objects instead.

Author: xabbuh

Core/Tests/Authorization/Voter/AbstractVoterTest.php

@@ -95,7 +95,7 @@ class AbstractVoterTest_LegacyVoter extends AbstractVoter
 {
  protected function getSupportedClasses()
  {
- return array('AbstractVoterTest_Object');
+ return array('stdClass');
  }
 
  protected function getSupportedAttributes()
@@ -113,7 +113,7 @@ class AbstractVoterTest_NothingImplementedVoter extends AbstractVoter
 {
  protected function getSupportedClasses()
  {
- return array('AbstractVoterTest_Object');
+ return array('stdClass');
  }
 
  protected function getSupportedAttributes()