nemmo\attachments\controllers\FileController::actionDeleteTemp PHP Method

    public function actionDeleteTemp($filename)
    {
        $userTempDir = $this->getModule()->getUserDirPath();
        $filePath = $userTempDir . DIRECTORY_SEPARATOR . $filename;
        unlink($filePath);
        if (!sizeof(FileHelper::findFiles($userTempDir))) {
            rmdir($userTempDir);
        }
        Yii::$app->response->format = Response::FORMAT_JSON;
        return [];
    }