Revert "docs: update docs to use HttpClientModule instead of HttpModule (#22727)"

This reverts commit b5533e0ee5.

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

@@ -5,7 +5,7 @@
 import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
 import { FormsModule } from '@angular/forms';
-import { HttpClientModule } from '@angular/common/http';
+import { HttpModule } from '@angular/http';
 
 import { AppComponent } from './app.component';
 // #docregion directive-import
@@ -24,7 +24,7 @@ import { ItemDirective } from './item.directive';
   imports: [
     BrowserModule,
     FormsModule,
-    HttpClientModule
+    HttpModule
   ],
   providers: [],
   bootstrap: [AppComponent]

aio/content/examples/dependency-injection-in-action/src/app/app.module.ts

@@ -1,7 +1,7 @@
 // #docregion
 import { BrowserModule }                from '@angular/platform-browser';
 import { FormsModule }                  from '@angular/forms';
-import { HttpClientModule }             from '@angular/common/http';
+import { HttpModule }                   from '@angular/http';
 
 // import { AppRoutingModule }             from './app-routing.module';
 import { LocationStrategy,
@@ -54,7 +54,7 @@ const c_components = [
   imports: [
     BrowserModule,
     FormsModule,
-    HttpClientModule,
+    HttpModule,
     InMemoryWebApiModule.forRoot(HeroData)
     // AppRoutingModule TODO: add routes
   ],

aio/content/examples/feature-modules/src/app/app.module.ts

@@ -3,7 +3,7 @@
 import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
 import { FormsModule } from '@angular/forms';
-import { HttpClientModule } from '@angular/common/http';
+import { HttpModule } from '@angular/http';
 
 import { AppComponent } from './app.component';
 // import the feature module here so you can add it to the imports array below
@@ -17,7 +17,7 @@ import { CustomerDashboardModule } from './customer-dashboard/customer-dashboard
   imports: [
     BrowserModule,
     FormsModule,
-    HttpClientModule,
+    HttpModule,
     CustomerDashboardModule // add the feature module here
   ],
   providers: [],

aio/content/examples/lazy-loading-ngmodules/src/app/app.module.ts

@@ -1,7 +1,7 @@
 import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
 import { FormsModule } from '@angular/forms';
-import { HttpClientModule } from '@angular/common/http';
+import { HttpModule } from '@angular/http';
 import { AppRoutingModule } from './app-routing.module';
 
 import { AppComponent } from './app.component';
@@ -13,7 +13,7 @@ import { AppComponent } from './app.component';
   imports: [
     BrowserModule,
     FormsModule,
-    HttpClientModule,
+    HttpModule,
     AppRoutingModule
   ],
   providers: [],

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

@@ -1,7 +1,7 @@
 import { BrowserModule } from '@angular/platform-browser';
 import { NgModule } from '@angular/core';
 import { FormsModule } from '@angular/forms';
-import { HttpClientModule } from '@angular/common/http';
+import { HttpModule } from '@angular/http';
 
 /* App Root */
 import { AppComponent } from './app.component';

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

@@ -1,7 +1,7 @@
 import { NgModule } from '@angular/core';
-import { BrowserModule } from '@angular/platform-browser';
+import { BrowserModule }            from '@angular/platform-browser';
 
-import { HttpClientModule } from '@angular/common/http';
+import { HttpModule }           from '@angular/http';
 import { InMemoryWebApiModule } from 'angular-in-memory-web-api';
 
 import { RouterModule } from '@angular/router';
@@ -44,7 +44,7 @@ import * as s0901 from '../09-01/app/app.module';
 @NgModule({
   imports: [
     BrowserModule,
-    HttpClientModule,
+    HttpModule,
     InMemoryWebApiModule.forRoot(HeroData),
 
     s0101.AppModule,