docs(aio): remove js examples

aio/content/examples/styleguide/src/app/app.component.ts

@@ -1,7 +0,0 @@
-import { Component } from '@angular/core';
-@Component({
-  selector: 'my-app',
-  template: '<h1 id="output">My First Angular App</h1>'
-})
-export class AppComponent { }
-

aio/content/examples/styleguide/src/app/app.module.ts

@@ -1,11 +0,0 @@
-// #docregion
-import { NgModule } from '@angular/core';
-import { BrowserModule } from '@angular/platform-browser';
-import { AppComponent } from './app.component';
-
-@NgModule({
-  imports: [ BrowserModule ],
-  declarations: [ AppComponent ],
-  bootstrap: [ AppComponent ]
-})
-export class AppModule { }