Revert "merged branch stof/serializable_role (PR #4925)"

This reverts commit b0750f6dcd, reversing
changes made to d09bfe7552.

src/Symfony/Component/Security/CHANGELOG.md

@@ -4,7 +4,6 @@ CHANGELOG
 2.1.0
 -----
 
- * Added the Serializable interface on the Role class
  * [BC BREAK] The signature of ExceptionListener has changed
  * changed the HttpUtils constructor signature to take a UrlGenerator and a UrlMatcher instead of a Router
  * EncoderFactoryInterface::getEncoder() can now also take a class name as an argument

src/Symfony/Component/Security/Core/Role/Role.php

@@ -17,7 +17,7 @@ namespace Symfony\Component\Security\Core\Role;
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-class Role implements RoleInterface, \Serializable
+class Role implements RoleInterface
 {
     private $role;
 
@@ -38,20 +38,4 @@ class Role implements RoleInterface, \Serializable
     {
         return $this->role;
     }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function serialize()
-    {
-        return serialize($this->role);
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function unserialize($serialized)
-    {
-        $this->role = unserialize($serialized);
-    }
 }

src/Symfony/Component/Security/Core/Role/SwitchUserRole.php

@@ -45,22 +45,4 @@ class SwitchUserRole extends Role
     {
         return $this->source;
     }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function serialize()
-    {
-        return serialize(array(parent::serialize(), $this->source));
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function unserialize($serialized)
-    {
-        list($parent, $this->source) = unserialize($serialized);
-
-        parent::unserialize($parent);
-    }
 }