Remove global module definition from angular-mocks

Because it conficts with commonjs.

See http://wiki.commonjs.org/wiki/Modules/1.1:

> In a module, there must be a free variable "module", that is an Object.

Also see the existing `module` declaration on:
https://github.com/borisyankov/DefinitelyTyped/blob/27e02d6674ffe8186a567515b4c157bcf945911e/node/node.d.ts#L61

Workaround is to use `angular.mock.module` instead of `module`.

Closes #2072

angularjs/angular-mocks.d.ts

@@ -237,5 +237,6 @@ declare module angular {
 ///////////////////////////////////////////////////////////////////////////////
 // functions attached to global object (window)
 ///////////////////////////////////////////////////////////////////////////////
-declare var module: (...modules: any[]) => any;
+//Use `angular.mock.module` instead of `module`, as `module` conflicts with commonjs.
+//declare var module: (...modules: any[]) => any;
 declare var inject: angular.IInjectStatic;