[PRQ#57527] Merge Request for dia

MarsSeed [1] filed a request to merge dia [2] into dia-git [3]: Fails to build in clean chroot as reported by @hfath on 2022-10-26. Last tagged release is from 2014. I suggest that it is no longer useful to keep AUR/dia. The git master branch is actively maintained by upstream. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/dia/ [3] https://aur.archlinux.org/pkgbase/dia-git/