refactor: remove useless imports

Closes #4426

modules/angular2/src/core/application_common.ts

@@ -1,18 +1,10 @@
 import {FORM_PROVIDERS} from 'angular2/src/core/forms';
-import {provide, Provider, Injector, OpaqueToken} from 'angular2/src/core/di';
-import {
-  NumberWrapper,
-  Type,
-  isBlank,
-  isPresent,
-  assertionsEnabled,
-  print,
-  stringify
-} from 'angular2/src/core/facade/lang';
+import {provide, Provider} from 'angular2/src/core/di';
+import {Type, isBlank, isPresent, stringify} from 'angular2/src/core/facade/lang';
 import {BrowserDomAdapter} from 'angular2/src/core/dom/browser_adapter';
 import {BrowserGetTestability} from 'angular2/src/core/testability/browser_testability';
 import {DOM} from 'angular2/src/core/dom/dom_adapter';
-import {Promise, PromiseWrapper, PromiseCompleter} from 'angular2/src/core/facade/async';
+import {Promise} from 'angular2/src/core/facade/async';
 import {XHR} from 'angular2/src/core/compiler/xhr';
 import {XHRImpl} from 'angular2/src/core/compiler/xhr_impl';
 
@@ -23,11 +15,8 @@ import {
 } from 'angular2/src/core/render/dom/events/event_manager';
 import {KeyEventsPlugin} from 'angular2/src/core/render/dom/events/key_events';
 import {HammerGesturesPlugin} from 'angular2/src/core/render/dom/events/hammer_gestures';
-import {
-  ComponentRef,
-  DynamicComponentLoader
-} from 'angular2/src/core/linker/dynamic_component_loader';
-import {TestabilityRegistry, Testability} from 'angular2/src/core/testability/testability';
+import {ComponentRef} from 'angular2/src/core/linker/dynamic_component_loader';
+import {Testability} from 'angular2/src/core/testability/testability';
 import {Renderer} from 'angular2/src/core/render/api';
 import {DomRenderer, DomRenderer_, DOCUMENT} from 'angular2/src/core/render/render';
 import {

modules/angular2/src/core/linker/view.ts

@@ -5,12 +5,9 @@ import {
   StringMapWrapper,
 } from 'angular2/src/core/facade/collection';
 import {
-  AST,
   ChangeDetector,
-  ChangeDetectorRef,
   ChangeDispatcher,
   DirectiveIndex,
-  DirectiveRecord,
   BindingTarget,
   Locals,
   ProtoChangeDetector
@@ -24,7 +21,7 @@ import {
   DirectiveProvider
 } from './element_injector';
 import {ElementBinder} from './element_binder';
-import {isPresent, isBlank} from 'angular2/src/core/facade/lang';
+import {isPresent} from 'angular2/src/core/facade/lang';
 import {BaseException, WrappedException} from 'angular2/src/core/facade/exceptions';
 import * as renderApi from 'angular2/src/core/render/api';
 import {RenderEventDispatcher} from 'angular2/src/core/render/api';

modules/angular2/src/core/linker/view_resolver.ts

@@ -4,7 +4,7 @@ import {ComponentMetadata} from '../metadata/directives';
 
 import {Type, stringify, isBlank, isPresent} from 'angular2/src/core/facade/lang';
 import {BaseException} from 'angular2/src/core/facade/exceptions';
-import {Map, MapWrapper, ListWrapper} from 'angular2/src/core/facade/collection';
+import {Map} from 'angular2/src/core/facade/collection';
 
 import {reflector} from 'angular2/src/core/reflection/reflection';
 

modules/angular2/src/core/reflection/reflection_capabilities.ts

@@ -6,7 +6,7 @@ import {
   stringify,
   ConcreteType
 } from 'angular2/src/core/facade/lang';
-import {BaseException, WrappedException} from 'angular2/src/core/facade/exceptions';
+import {BaseException} from 'angular2/src/core/facade/exceptions';
 import {ListWrapper} from 'angular2/src/core/facade/collection';
 import {GetterFn, SetterFn, MethodFn} from './types';
 import {PlatformReflectionCapabilities} from './platform_reflection_capabilities';