[PRQ#71231] Deletion Request for python-stempel-git

MarsSeed [1] filed a deletion request for python-stempel-git [2]: EOL since 2020. [a] Unused. Mandatory transitive dependency python-pycachesim{,-git} is EOL since 2022 unmaintained, and FTBFS with gcc 14. [a]: https://github.com/RRZE-HPC/stempel [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-stempel-git/