[PRQ#43008] Deletion Request for mdm-display-manager

MarsSeed [1] filed a deletion request for mdm-display-manager [2]: Orphan package; last update 2017. Linux Mint's MDM Display Manager project is dead since 2018. [a] [a]: https://github.com/linuxmint/mdm/ [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/mdm-display-manager/