ISTWCMS-4704: removed unused variable

uw_fdsu_theme_resp.theme

@@ -372,7 +372,6 @@ function uw_fdsu_theme_resp_preprocess_node(&$variables) {
     if ($variables['view_mode'] == 'teaser' &&
       in_array($variables['node']->getType(), $teasers_to_preprocess)) {
       $variables['teaser'] = $uwService->uwGetNodeContent($variables['node'], 'teaser', 'all');
-      $variables['rep_date'] = $variables['content']['field_uw_event_date'];
     }
 
     // If on a node page get the variables for now.