[Build] Remove boilerplate from scripts

No longer necessary after JSHint configuration.

platform/commonUI/general/test/SplashScreenManagerSpec.js

@@ -19,12 +19,10 @@
  * this source code distribution or the Licensing information page available
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
-/*global define,describe,beforeEach,jasmine,it,expect*/
 
 define([
     '../src/SplashScreenManager'
 ], function (SplashScreenManager) {
-    'use strict';
 
     describe('SplashScreenManager', function () {
         var $document,