Missed a call to Conpherence sprite

Summary: Fixes an exception on Conpherence.

Test Plan: Use Conpherence. Grep for other locations.

Reviewers: epriestley

Subscribers: Korvin, epriestley

Differential Revision: https://secure.phabricator.com/D11027

src/applications/conpherence/controller/ConpherenceWidgetController.php

@@ -60,7 +60,6 @@ final class ConpherenceWidgetController extends ConpherenceController {
   }
 
   private function renderWidgetPaneContent() {
-    require_celerity_resource('sprite-conpherence-css');
     $conpherence = $this->getConpherence();
 
     $widgets = array();