[PRQ#50028] Deletion Request for python-taskflow

MarsSeed [1] filed a deletion request for python-taskflow [2]: Cleanup of unneeded package that is only used transitively by a few openstack server packages, abandoned and broken on AUR since 1-2 years ago. (Submitted deletion requests for them earlier.) (Seems no one wants to maintain 100+ Openstack server related Python builds on AUR after 2021. PyPI is the best source for these frequently updated modules.) [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-taskflow/