[PRQ#46241] Deletion Request for python-sphinx-multibuild

MarsSeed [1] filed a deletion request for python-sphinx-multibuild [2]: Broken, unmaintained Python2/Python3 package from 2018. Nothing depends on it. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-sphinx-multibuild/