[PRQ#49652] Deletion Request for python-keystonemiddleware

MarsSeed [1] filed a deletion request for python-keystonemiddleware [2]: Cleanup of long-broken, unused Python module. Submitter completely MIA since 2022-11. Its current consumers (openstack-* packages) depend on many broken pkgs from same submitter - some of them are even dual Python2/Python3 packages missing Python2 deps. OpenStack maintains hundreds of Python components, with frequent updates. Better drop all related abandoned packages from AUR and let people install them when needed from PyPI. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-keystonemiddleware/