[devtools] drop unused `reset_schema` and `reset_vreg` class attribute
They have no effect and no user...
Related to #2944813
# -*- 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 repository side views, usually for notification"""