remove unecessary use

app/Events/EventParticipationCancelled.php

@@ -3,11 +3,8 @@
 namespace App\Events;
 
 use App\Models\Events;
-use Illuminate\Broadcasting\Channel;
 use Illuminate\Broadcasting\InteractsWithSockets;
-use Illuminate\Broadcasting\PresenceChannel;
 use Illuminate\Broadcasting\PrivateChannel;
-use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
 use Illuminate\Contracts\Broadcasting\ShouldBroadcastNow;
 use Illuminate\Foundation\Events\Dispatchable;
 use Illuminate\Queue\SerializesModels;