Remove import 'rxjs/Rx' from test.ts angular#1602 (angular#1612)

Author: Miguelángel Cabrera

addon/ng2/blueprints/ng2/files/__path__/test.ts

@@ -11,9 +11,6 @@ import 'zone.js/dist/async-test';
 import 'zone.js/dist/fake-async-test';
 import 'zone.js/dist/sync-test';
 
-// RxJS
-import 'rxjs/Rx';
-
 // Unfortunately there's no typing for the `__karma__` variable. Just declare it as any.
 declare var __karma__: any;