Deprecate import inject from @ember/service (#2716)

* Deprecate usage of import inject

ui/admin/app/controllers/scopes/scope/auth-methods/auth-method/managed-groups/index.js

@@ -5,7 +5,7 @@
 
 import Controller, { inject as controller } from '@ember/controller';
 import { action } from '@ember/object';
-import { inject as service } from '@ember/service';
+import { service } from '@ember/service';
 import { loading } from 'ember-loading';
 import { confirm } from 'core/decorators/confirm';
 import { notifySuccess, notifyError } from 'core/decorators/notify';