remove unecessary delete notifications on validate user

app/Http/Controllers/UserController.php

@@ -3,7 +3,6 @@
 namespace App\Http\Controllers;
 
 use App\Events\UserCreated;
-use App\Events\UserValidated;
 use App\Mail\ValidateMail;
 use App\Models\Notification;
 use App\Models\User;