[PRQ#43364] Deletion Request for python2-bibtexparser

MarsSeed [1] filed a deletion request for python2-bibtexparser [2]: Broken Py2 package: missing a Py2 depend. But it is only optionally required, by one package. But that one is already on Py3, so it needs to change to using python-bibtexparser, available on AUR. Safe to delete this defunct one. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python2-bibtexparser/