Emberjs: remove trailing comma

This makes JSCS pass on the ember app

examples/emberjs/js/controllers/todos_controller.js

@@ -28,7 +28,7 @@
 				var completed = this.get('completed');
 				completed.invoke('deleteRecord');
 				completed.invoke('save');
-			},
+			}
 		},
 
 		/* properties */