chore(test-app): use service import directly (#3011)

Author: BobrImperator

packages/test-app/lib/my-engine/addon/controllers/protected.js

@@ -1,5 +1,5 @@
 import Controller from '@ember/controller';
-import { inject as service } from '@ember/service';
+import { service } from '@ember/service';
 import { action } from '@ember/object';
 
 export default class ProtectedController extends Controller {

packages/test-app/lib/my-engine/addon/routes/open-only.js

@@ -1,5 +1,5 @@
 import Route from '@ember/routing/route';
-import { inject as service } from '@ember/service';
+import { service } from '@ember/service';
 
 export default class OpenOnlyRoute extends Route {
   @service session;

packages/test-app/lib/my-engine/addon/routes/protected.js

@@ -1,5 +1,5 @@
 import Route from '@ember/routing/route';
-import { inject as service } from '@ember/service';
+import { service } from '@ember/service';
 
 export default class ProtectedRoute extends Route {
   @service session;