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

* Deprecate usage of import inject

addons/api/addon/abilities/channel-recording.js

@@ -4,7 +4,7 @@
  */
 
 import ModelAbility from './model';
-import { inject as service } from '@ember/service';
+import { service } from '@ember/service';
 
 /**
  * Provides abilities for channel recordings.

addons/api/addon/abilities/credential-store.js

@@ -4,7 +4,7 @@
  */
 
 import ModelAbility from './model';
-import { inject as service } from '@ember/service';
+import { service } from '@ember/service';
 /**
  * Provides abilities for credential store.
  */

addons/api/addon/abilities/role.js

@@ -4,7 +4,7 @@
  */
 
 import ModelAbility from './model';
-import { inject as service } from '@ember/service';
+import { service } from '@ember/service';
 
 class InvalidRolePrincipalTypeError extends Error {
   name = 'InvalidRolePrincipalTypeError';