cleanup: removes the render and lifecycle_hooks modules

BREAKING CHANGE

Before

import {Renderer} from 'angular2/render';

After

import {Renderer} form 'angular2/core';

Closes #5367

modules/angular2/angular2.dart

@@ -9,7 +9,6 @@ export 'package:angular2/core.dart'
     hide forwardRef, resolveForwardRef, ForwardRefFn;
 export 'package:angular2/common.dart';
 export 'package:angular2/profile.dart';
-export 'package:angular2/lifecycle_hooks.dart';
 export 'package:angular2/src/core/application_tokens.dart'
     hide APP_COMPONENT_REF_PROMISE, APP_ID_RANDOM_PROVIDER;
 export 'package:angular2/src/platform/dom/dom_tokens.dart';