refactor: remove unused code

Change-Id: Ie9653b87e955979dfe21412b643725bae274b069
diff --git a/src/js/options.js b/src/js/options.js
index f56bc7a..7a276ae 100644
--- a/src/js/options.js
+++ b/src/js/options.js
@@ -2,8 +2,6 @@
 // source code is governed by a BSD-style license that can be found in the

 // LICENSE file.

 

-var bg = chrome.extension.getBackgroundPage();

-

 function $(id) {

   return document.getElementById(id);

 }

diff --git a/src/popup.html b/src/popup.html
index ac3de6d..60bac09 100644
--- a/src/popup.html
+++ b/src/popup.html
@@ -123,7 +123,6 @@
     </li>
   </ul>
   </div>
-  <script src="js/hotkey_storage.js"></script>
   <script src="js/popup.js"></script>
 </body>
 </html>