[PRQ#49822] Deletion Request for mingw-w64-angleproject

MarsSeed [1] filed a deletion request for mingw-w64-angleproject [2]: Cleanup of this unused package from 2016, after dropping the also unneeded mingw-w64-qt5-webkit (PRQ#49821). [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/mingw-w64-angleproject/