[PRQ#43991] Deletion Request for agensgraph-git

MarsSeed [1] filed a deletion request for agensgraph-git [2]: Orphan, defunct non-VCS package from 2019 (uses fixed commit as source). Seems better to delete. Also this might have been a fork of PostgreSQL, but it does not guarantee compatibility, so this package should never have provided postgresql. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/agensgraph-git/