[PRQ#45577] Deletion Request for spdylay

MarsSeed [1] filed a deletion request for spdylay [2]: Unneeded experimental library from 2016; development stopped since same year. [a] [a]: https://github.com/tatsuhiro-t/spdylay [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/spdylay/