Format parameter is not referenced

src/UNL/Catalog.php

@@ -224,11 +224,6 @@ class UNL_Catalog
      */
     public function showCourse($listing, $display_subject = false)
     {
-        if (isset($_GET['format']) && $_GET['format']=='xml') {
-            $format = 'toXml';
-        } else {
-            $format = 'toHtml';
-        }
         $savvy = $this->getCourseRenderer();
         return $savvy->render($listing);
     }