[PRQ#41161] Deletion Request for python-atari-py

MarsSeed [1] filed a deletion request for python-atari-py [2]: This has been discontinued in September 2021. Superseded by python-ale-py, available on AUR. Supports the same use cases. Seems safe to delete, there are no dependent packages anymore. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-atari-py/