[PRQ#46116] Deletion Request for lib32-oniguruma

MarsSeed [1] filed a deletion request for lib32-oniguruma [2]: Unmaintained, unused lib32 package. Last updated in 2022-09; build failures reported in same months, but owner did not respond. But nothing depends on this regex library, so it's safe to delete. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/lib32-oniguruma/