Depend on class autoloading

Test Plan:
Run setup.
/differential/

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Koolvin

Maniphest Tasks: T1103

Differential Revision: https://secure.phabricator.com/D2612

src/applications/differential/controller/revisionview/DifferentialRevisionViewController.php

@@ -227,7 +227,6 @@ final class DifferentialRevisionViewController extends DifferentialController {
 
       // TODO: build a better version of the action links and deprecate the
       // whole DifferentialRevisionDetailRenderer class.
-      PhutilSymbolLoader::loadClass($custom_renderer_class);
       $custom_renderer =
         newv($custom_renderer_class, array());
       $actions = array_merge(