fix(analzyer): removed unused imports

Author: vsavkin

Diff for: modules/angular2/src/forms/directives/template_driven_form_directive.ts

@@ -1,6 +1,6 @@
 import {PromiseWrapper, ObservableWrapper, EventEmitter} from 'angular2/src/facade/async';
 import {StringMapWrapper, List, ListWrapper} from 'angular2/src/facade/collection';
-import {isPresent, CONST_EXPR} from 'angular2/src/facade/lang';
+import {isPresent, isBlank, CONST_EXPR} from 'angular2/src/facade/lang';
 import {Directive} from 'angular2/src/core/annotations/decorators';
 import {FORWARD_REF, Binding} from 'angular2/di';
 import {ControlDirective} from './control_directive';
@@ -97,7 +97,7 @@ export class TemplateDrivenFormDirective extends ControlContainerDirective imple
 
   _findContainer(path: List<string>): ControlGroup {
     ListWrapper.removeLast(path);
-    return <ControlGroup>this.form.find(path);
+    return ListWrapper.isEmpty(path) ? this.form : <ControlGroup>this.form.find(path);
   }
 
   _later(fn) {

Diff for: modules/examples/src/model_driven_forms/index.ts

@@ -7,7 +7,6 @@ import {
   FormBuilder
 } from 'angular2/forms';
 
-import {ObservableWrapper} from 'angular2/src/facade/async';
 import {RegExpWrapper, print, isPresent} from 'angular2/src/facade/lang';
 
 import {reflector} from 'angular2/src/reflection/reflection';

Diff for: modules/examples/src/template_driven_forms/index.ts

@@ -6,7 +6,6 @@ import {
   TemplateDrivenFormDirective
 } from 'angular2/forms';
 
-import {ObservableWrapper} from 'angular2/src/facade/async';
 import {RegExpWrapper, print, isPresent} from 'angular2/src/facade/lang';
 
 import {reflector} from 'angular2/src/reflection/reflection';