User warning: xml-transform, with Drupal 7.50 core update

The latest Drupal core update (7.50) produced this warning message on our sites with Import HTML enabled:

"User warning: The following module is missing from the file system: xml-transform."

We traced it to your module, perhaps here in xml-transform.inc, line 19:

if (defined("DEBUGLEVEL")) {
module_load_include('inc', 'xml-transform', 'debug');
}

Since we are not currently using the module, we just disabled for now.