Add SoftDeletingTrait

app/models/Subscriber.php

@@ -1,9 +1,11 @@
 <?php
 
 	use Watson\Validating\ValidatingTrait;
+	use Illuminate\Database\Eloquent\SoftDeletingTrait;
 
 	class Subscriber extends Eloquent {
 		use ValidatingTrait;
+		use SoftDeletingTrait;
 
 		protected $rules = [
 			'email' => 'required|email'