Rename cleanup_interface_sobjects into cleanup_unused_appobjects
Interfaces are gone in 3.18
Related to #2782004.
# -*- coding: utf-8 -*-
# copyright %(year)s %(author)s, all rights reserved.
# contact %(author-web-site)s -- mailto:%(author-email)s
#
%(long-license)s
"""%(distname)s specific hooks and operations"""