Delete some useless imports

app/Http/Controllers/UploadController.php

@@ -5,7 +5,6 @@ namespace App\Http\Controllers;
 use Illuminate\Http\Request;
 use Illuminate\Http\UploadedFile;
 use Illuminate\Routing\Controller as BaseController;
-use Illuminate\Support\Facades\Storage;
 use Pion\Laravel\ChunkUpload\Exceptions\UploadMissingFileException;
 use Pion\Laravel\ChunkUpload\Handler\HandlerFactory;
 use Pion\Laravel\ChunkUpload\Receiver\FileReceiver;