[PRQ#46158] Deletion Request for python-sidekit

MarsSeed [1] filed a deletion request for python-sidekit [2]: Orphan OOD scientific package from 2017. Not useful to keep here as is. Latest version can be installed from PyPI or the GitLab repo hosted by the sponsoring academic institution. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-sidekit/