// Delete a single file
File::delete($filename);
// Delete multiple files
File::delete($file1, $file2, $file3);
// Delete an array of files
$files = array($file1, $file2);
File::delete($files);
//And don't forget to add at the top:
use Illuminate\Support\Facades\File;
$destinationPath = 'your_path';
File::delete($destinationPath.'/your_file');