Role Hide

This module allows you to hide specific roles from the permissions screen. This is useful when you have many roles that don't necessarily have permissions assigned to them, but are used for categories.

While it may still make sites with a lot of roles slow on that screen when it builds the form the rendering will be much faster and cleaner.

This currently doesn't integrate with the http://drupal.org/project/filter_perms module. This is something I may want to implement later.