[PRQ#59967] Deletion Request for re2g-git

MarsSeed [1] filed a deletion request for re2g-git [2]: Upstream abandoned for 9 years. [a] Broken: fails to build from source. Case: to incompatibility with its dependency re2 and abseil-cpp. Even the C++ standard version mismatches between this and the consumed libraries, leading to code syntax errors. [a]: https://github.com/akamai/re2g [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/re2g-git/