If you want to do it the Laravel way, use the File::delete() method.
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;