[PRQ#49323] Deletion Request for qt5-quick3d-git

MarsSeed [1] filed a deletion request for qt5-quick3d-git [2]: Upstream source not developed since 4 years ago. [a] [a]: https://git.qt.io/annichol/qtquick3d/ [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/qt5-quick3d-git/