[PRQ#62043] Deletion Request for python2-decorator

MarsSeed [1] filed a deletion request for python2-decorator [2]: The last reverse dependencies of this deprecated Python2 library (released in 2020) have been deleted ~6 months ago. Upstream no longer supports Python2. So I think it is safe to drop this from AUR as well. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python2-decorator/