[PRQ#43126] Deletion Request for python-chainmap

MarsSeed [1] filed a deletion request for python-chainmap [2]: Unneeded Py2/Py3 package; last release 2019. [a] "Backport/clone of ChainMap for py26, py32, and pypy3". This is not a PyPy3 build. And Python 2.6 and 3.2 are not used by anything on AUR. [a]: https://pypi.org/project/chainmap/ [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-chainmap/