Remove support for Propel (#689)

Author: pierredup

CHANGELOG-2.0.md

@@ -17,6 +17,7 @@ This changelog references the relevant changes done in 6.0 versions.
     - `OAuthEvent::PRE_AUTHORIZATION_PROCESS` => `FOS\OAuthServerBundle\Event\PreAuthorizationEvent`
     - `OAuthEvent::POST_AUTHORIZATION_PROCESS` => `FOS\OAuthServerBundle\Event\PostAuthorizationEvent`
 * **[BC break]** Removed support for templating engine [[#653](https://github.com/FriendsOfSymfony/FOSOAuthServerBundle/pull/653)]
+* **[BC break]** Removed support for Propel [[#689](https://github.com/FriendsOfSymfony/FOSOAuthServerBundle/pull/689)]
 
 ### 2.0.0-ALPHA0 (2018-05-01)
 

DependencyInjection/Configuration.php

@@ -32,7 +32,7 @@ public function getConfigTreeBuilder()
         $treeBuilder = new TreeBuilder('fos_oauth_server');
         $rootNode = $treeBuilder->getRootNode();
 
-        $supportedDrivers = ['orm', 'mongodb', 'propel', 'custom'];
+        $supportedDrivers = ['orm', 'mongodb', 'custom'];
 
         $rootNode
             ->validate()