Remove ember-fetch

guides/release/configuring-ember/debugging.md

@@ -69,7 +69,6 @@ Ember.ENV.LOG_STACKTRACE_ON_DEPRECATION = true;
 ### Implement a window error event listener to log all errors in production
 
 ```javascript {data-filename=app/app.js}
-import fetch from 'fetch';
 // ...
 window.addEventListener('error', function(error) {
   fetch('/error-notification', {

guides/release/in-depth-topics/making-api-requests.md

@@ -12,8 +12,6 @@ Some common tools for making [CRUD](https://en.wikipedia.org/wiki/Create,_read,_
 for formatting requests, normalizing responses, and efficiently
 managing a local cache of data. 
 It is included by default in new Ember apps.
-- Native JavaScript methods like [`fetch`](https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API). Install [`ember-fetch`](https://github.com/ember-cli/ember-fetch) in order to provide support for older browsers, and `import fetch from 'fetch'` to use it.
-- [jQuery Ajax](https://api.jquery.com/jquery.ajax/) requests. See [the guide for optional features](../../configuring-ember/optional-features/) in order to be able to `import jQuery from 'jquery'` in your app.
 - Other Ember-specific addons for data loading. Search for them on [Ember Observer](https://emberobserver.com)
 - ...and many more general JavaScript data fetching libraries, which you can install following [this guide](../../addons-and-dependencies/managing-dependencies/).
 

guides/release/models/finding-records.md

@@ -86,7 +86,6 @@ And if the adapter for the `User` model defines a `queryRecord()` method that ta
 
 ```javascript {data-filename=app/adapters/user.js}
 import Adapter from '@ember-data/adapter';
-import fetch from 'fetch';
 
 export default class UserAdapter extends Adapter {
   queryRecord(store, type, query) {

guides/release/models/pushing-records-into-the-store.md

@@ -136,7 +136,6 @@ so it can be accessed by other parts of your application.
 import Route from '@ember/routing/route';
 import { service } from '@ember/service';
 import { action } from '@ember/object';
-import fetch from 'fetch';
 
 export default class ConfirmPaymentRoute extends Route {
   @service store;

guides/release/routing/asynchronous-routing.md

@@ -34,8 +34,6 @@ Much of the power of promises comes from the fact that they can be
 chained together to perform sequential asynchronous operations:
 
 ```javascript
-import fetch from 'fetch';
-
 let usernamesPromise = fetch('/usernames.json');
 
 usernamesPromise.then(response => response.json())