cleanup unused references

Author: jcnance

TodoListClient/app/adapters/application.js

@@ -1,3 +1,4 @@
+import Ember from 'ember';
 import DS from 'ember-data';
 import ENV from 'todo-list-client/config/environment';
 

TodoListClient/app/components/forms/login-form/component.js

@@ -10,7 +10,7 @@ export default Ember.Component.extend({
   actions: {
     authenticate() {
       let { identification, password } = this.getProperties('identification', 'password');
-      this.get('session').authenticate('authenticator:oauth2', identification, password).catch((reason) => {
+      this.get('session').authenticate('authenticator:oauth2', identification, password).catch(() => {
         this.get('notify').error('Authentication failed');
       });
     }