[Build] Remove boilerplate from scripts

No longer necessary after JSHint configuration.

platform/representation/src/actions/ContextMenuAction.js

@@ -19,7 +19,6 @@
  * this source code distribution or the Licensing information page available
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
-/*global define,Promise*/
 
 /**
  * Module defining ContextMenuAction. Created by shale on 06/30/2015.
@@ -27,7 +26,6 @@
 define(
     ["../gestures/GestureConstants"],
     function (GestureConstants) {
-        "use strict";
 
         var MENU_TEMPLATE = "<mct-representation key=\"'context-menu'\" " +
                 "mct-object=\"domainObject\" " +