fix(@schematics/angular): remove async test helper function from component schematic

Author: clydin

packages/schematics/angular/application/other-files/app.component.spec.ts.template

@@ -1,18 +1,18 @@
-import { TestBed, async } from '@angular/core/testing';<% if (routing) { %>
+import { TestBed } from '@angular/core/testing';<% if (routing) { %>
 import { RouterTestingModule } from '@angular/router/testing';<% } %>
 import { AppComponent } from './app.component';
 
 describe('AppComponent', () => {
-  beforeEach(async(() => {
-    TestBed.configureTestingModule({<% if (routing) { %>
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({<% if (routing) { %>
       imports: [
         RouterTestingModule
       ],<% } %>
       declarations: [
         AppComponent
       ],
     }).compileComponents();
-  }));
+  });
 
   it('should create the app', () => {
     const fixture = TestBed.createComponent(AppComponent);

packages/schematics/angular/component/files/__name@dasherize@if-flat__/__name@dasherize__.__type@dasherize__.spec.ts.template

@@ -1,17 +1,17 @@
-import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { ComponentFixture, TestBed } from '@angular/core/testing';
 
 import { <%= classify(name) %><%= classify(type) %> } from './<%= dasherize(name) %><%= type ? '.' + dasherize(type): '' %>';
 
 describe('<%= classify(name) %><%= classify(type) %>', () => {
   let component: <%= classify(name) %><%= classify(type) %>;
   let fixture: ComponentFixture<<%= classify(name) %><%= classify(type) %>>;
 
-  beforeEach(async(() => {
-    TestBed.configureTestingModule({
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
       declarations: [ <%= classify(name) %><%= classify(type) %> ]
     })
     .compileComponents();
-  }));
+  });
 
   beforeEach(() => {
     fixture = TestBed.createComponent(<%= classify(name) %><%= classify(type) %>);