Fixed linter errors

app/components/player-controls.js

@@ -1,6 +1,5 @@
 import Component from '@ember/component';
 import { inject } from '@ember/service';
-import { computed } from '@ember/object';
 
 export default Component.extend({
   player: inject(),

app/controllers/settings.js

@@ -1,6 +1,5 @@
 import Controller from '@ember/controller';
 import { inject } from '@ember/service';
-import { alias } from '@ember/object/computed';
 
 export default Controller.extend({
   player: inject(),

app/routes/index.js

@@ -1,9 +1,7 @@
 import Route from '@ember/routing/route';
-import { inject } from '@ember/service';
-import { task } from 'ember-concurrency';
 
 export default Route.extend({
-  beforeModel(transition) {
+  beforeModel(/*transition*/) {
     this.transitionTo('media');
   }
 });

app/routes/media.js

@@ -22,7 +22,7 @@ export default Route.extend({
       this.get('uploadMediaFile').perform(file);
     },
 
-    error(error, transition) {
+    error(/*error, transition*/) {
       this.transitionTo('settings');
     }
   },

app/routes/settings.js

@@ -4,7 +4,7 @@ import { inject } from '@ember/service';
 export default Route.extend({
   player: inject(),
 
-  setupController(controller, model) {
+  setupController(controller, /*model*/) {
     controller.set('apiDomain', this.get('player.apiDomain'));
   }
 });

app/templates/components/player-controls.hbs

@@ -21,5 +21,8 @@
   </div>
 </div>
 
-{{playback-bar duration=player.duration position=player.position
-               seek=(action "seek")}}
+{{playback-bar
+  duration=player.duration
+  position=player.position
+  seek=(action "seek")
+}}

app/templates/settings.hbs

@@ -3,7 +3,7 @@
 {{#if player.isConnected}}
   <div class="message message-good">
     {{fa-icon "check-circle"}} PiDeck connection OK.
-    Return to {{#link-to 'media'}}Media{{/link-to}}.
+    Return to {{#link-to "media"}}Media{{/link-to}}.
   </div>
 {{else}}
   <div class="message message-bad">