[Build] Remove boilerplate from scripts

No longer necessary after JSHint configuration.

platform/commonUI/mobile/test/DeviceClassifierSpec.js

@@ -19,13 +19,11 @@
  * this source code distribution or the Licensing information page available
  * at runtime from the About dialog for additional information.
  *****************************************************************************/
-/*global define,Promise,describe,it,expect,beforeEach,waitsFor,jasmine*/
 
 
 define(
     ["../src/DeviceClassifier", "../src/DeviceMatchers"],
     function (DeviceClassifier, DeviceMatchers) {
-        "use strict";
 
         var AGENT_SERVICE_METHODS = [
                 'isMobile',