refactor(AppModule): removed entryComponents

Closes angular#1821

Author: shairez

addon/ng2/blueprints/ng2/files/__path__/app/app.module.ts

@@ -15,7 +15,6 @@ import { AppComponent } from './app.component';
     HttpModule
   ],
   providers: [],
-  entryComponents: [AppComponent],
   bootstrap: [AppComponent]
 })
 export class AppModule { }