Craft\AmForms_ExportsService::deleteExportFilesForForm PHP Method

    public function deleteExportFilesForForm(AmForms_FormModel $form)
    {
        $files = IOHelper::getFiles($this->_getExportPath());
        if (!$files || !count($files)) {
            return false;
        }
        foreach ($files as $file) {
            if (strpos($file, $form->handle) !== false) {
                IOHelper::deleteFile($file);
            }
        }
    }