revert: fix(change_detection): allow to destroy OnPush components inside of a host event

This reverts commit 280b86ec55.

modules/angular2/test/core/linker/integration_spec.ts

@@ -755,30 +755,6 @@ function declareTests() {
                             async.done();
                           })}));
 
-        if (DOM.supportsDOMEvents()) {
-          it("should allow to destroy a component from within a host event handler",
-             inject([TestComponentBuilder], fakeAsync((tcb: TestComponentBuilder) => {
-
-                      var fixture: ComponentFixture;
-                      tcb.overrideView(
-                             MyComp, new ViewMetadata({
-                               template: '<push-cmp-with-host-event></push-cmp-with-host-event>',
-                               directives: [[[PushCmpWithHostEvent]]]
-                             }))
-
-                          .createAsync(MyComp)
-                          .then(root => { fixture = root; });
-                      tick();
-                      fixture.detectChanges();
-
-                      var cmpEl = fixture.debugElement.children[0];
-                      var cmp: PushCmpWithHostEvent = cmpEl.inject(PushCmpWithHostEvent);
-                      cmp.ctxCallback = (_) => fixture.destroy();
-
-                      expect(() => cmpEl.triggerEventHandler('click', <Event>{})).not.toThrow();
-                    })));
-        }
-
         it('should not affect updating properties on the component',
            inject([TestComponentBuilder, AsyncTestCompleter],
                   (tcb: TestComponentBuilder, async) => {
@@ -1977,16 +1953,6 @@ class PushCmpWithRef {
   propagate() { this.ref.markForCheck(); }
 }
 
-@Component({
-  selector: 'push-cmp-with-host-event',
-  host: {'(click)': 'ctxCallback($event)'},
-  changeDetection: ChangeDetectionStrategy.OnPush,
-  template: ''
-})
-class PushCmpWithHostEvent {
-  ctxCallback: Function = (_) => {};
-}
-
 @Component({
   selector: 'push-cmp-with-async',
   changeDetection: ChangeDetectionStrategy.OnPush,