[PRQ#46135] Deletion Request for openfoam-4.x

MarsSeed [1] filed a deletion request for openfoam-4.x [2]: Orphan legacy openfoam package from 2017. Nothing depends on it. There are newer versions of openfoam on AUR. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/openfoam-4.x/