Remove blank comment in script

Author: sarthak-sehgal

main/templates/main/visualizations.html

@@ -35,7 +35,6 @@
         <div id='snippetDiv'></div>
     </body>
     <script type="text/javascript">
-        // 
         String.prototype.replaceAll = function(search, replacement) {
             var target = this;
             return target.replace(new RegExp(search, 'g'), replacement);