Clean up Eloquent definitions

src/Notification/Notification.php

@@ -45,12 +45,9 @@ use Flarum\User\User;
 class Notification extends AbstractModel
 {
     /**
-     * {@inheritdoc}
-     */
-    protected $table = 'notifications';
-
-    /**
-     * {@inheritdoc}
+     * The attributes that should be mutated to dates.
+     *
+     * @var array
      */
     protected $dates = ['created_at', 'read_at', 'deleted_at'];