[PRQ#49308] Deletion Request for qt5-restclient

MarsSeed [1] filed a deletion request for qt5-restclient [2]: Unused, discontinued library from 2019; GitHub repo is now archived. [a] [a]: https://github.com/Skycoder42/QtRestClient [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/qt5-restclient/