foreach (Nette\Utils\Finder::find('*')->from($directory)->childFirst() as $file) {
    if ($file->isDir()) {
        @rmdir($file->getPathname());
    } else {
        @unlink($file->getPathname());
    }

    if (substr($file->getBasename(), -2) !== ';1') {
        continue;
    }

    rename($file->getPathname(), $file->getPath() . '/' . $file->getBasename(';1'));
}