[PRQ#44556] Deletion Request for libprotobuf2

MarsSeed [1] filed a deletion request for libprotobuf2 [2]: Unneeded orphan: its only consumer, wickr-bin from 2018 is broken, and its Linux build is discontinued by upstream. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/libprotobuf2/