[PRQ#51842] Deletion Request for libmemcache

MarsSeed [1] filed a deletion request for libmemcache [2]: Unused, broken client library implementation by FreeBSD; discontinued since 2006. [a] Safe to delete, as nothing on AUR depends on it, and even original submitter commented last year that they no longer have any downstream consumer applications to use or test this with. [a]: https://people.freebsd.org/~seanc/libmemcache/ [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/libmemcache/