[PRQ#50841] Deletion Request for libgnomeprintui

MarsSeed [1] filed a deletion request for libgnomeprintui [2]: Safe to delete this now unneeded GNOME2 component from 2007. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/libgnomeprintui/