[PRQ#43455] Deletion Request for gtk-doc-git

MarsSeed [1] filed a deletion request for gtk-doc-git [2]: Orphan VCS package from 2020. One-time effort. Has non-nonotonic pkgver(). Better to delete, there's no interest in maintaining it. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/gtk-doc-git/