mirrors: remove quantum-mirror.hu

the mirror was shut off

Author: lazka

web/dev/mirrors.md

@@ -41,7 +41,6 @@ support (\*), HTTPS support, synced at least once per day from the primary serve
 | mirror.nju.edu.cn | [HTTPS](https://mirror.nju.edu.cn/msys2/) \| [RSYNC](rsync://mirror.nju.edu.cn/msys2/) | [issue](https://github.com/msys2/msys2.github.io/issues/155) |
 | mirrors.bfsu.edu.cn | [HTTPS](https://mirrors.bfsu.edu.cn/msys2/) \| [RSYNC](rsync://mirrors.bfsu.edu.cn/msys2/) | [issue](https://github.com/msys2/MSYS2-packages/issues/2775) |
 | mirror.clarkson.edu | [HTTPS](https://mirror.clarkson.edu/msys2/) \| [RSYNC](rsync://mirror.clarkson.edu/msys2/) | [issue](https://github.com/msys2/msys2.github.io/issues/185) |
-| quantum-mirror.hu | [HTTPS](https://quantum-mirror.hu/mirrors/pub/msys2/) \| [RSYNC](rsync://quantum-mirror.hu/msys2/) | [website](https://quantum-mirror.hu/web/contact_en.html) |
 | distrohub.kyiv.ua | [HTTPS](https://distrohub.kyiv.ua/msys2/) \| [RSYNC](rsync://distrohub.kyiv.ua/msys2/) | [website](https://distrohub.kyiv.ua) |
 | mirror.archlinux.tw | [HTTPS](https://mirror.archlinux.tw/MSYS2/) \| [RSYNC](rsync://mirror.archlinux.tw/msys2/) | [issue](https://github.com/msys2/msys2.github.io/issues/396) |
 | us.mirrors.cicku.me | [HTTPS](https://us.mirrors.cicku.me/msys2/) \| [RSYNC](rsync://us.dyi.ng/msys2/) | [issue](https://github.com/msys2/msys2.github.io/issues/410) |