[pkginfo] Remove unused parameter
To retrieve cube dependencies or cube requirements,
no more need to pass the 'oldkey' parameter to _cube_deps function as this parameter is unused.
# -*- 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"""