[PRQ#43942] Deletion Request for mingw-w64-libilbc

MarsSeed [1] filed a deletion request for mingw-w64-libilbc [2]: Orphaned old package from 2018, nothing depends on it. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/mingw-w64-libilbc/