move this to the header

_layouts/single.html

@@ -21,7 +21,6 @@ layout: default
     enable_page_level_ads: true
   });
 </script>
-<script type="text/javascript" src="//cdn.thisiswaldo.com/static/js/4156.js"></script>
 
 <div id="main" role="main">
   {% include sidebar.html %}