mirrors: remove mirrors.hit.edu.cn

No longer reachable, see
#180 (comment)

Author: lazka

web/dev/mirrors.md

@@ -40,7 +40,6 @@ support (\*), HTTPS support, synced at least once per day from the primary serve
 | mirrors.ustc.edu.cn | [HTTPS](https://mirrors.ustc.edu.cn/msys2/) \| [RSYNC](rsync://rsync.mirrors.ustc.edu.cn/repo/msys2/) | <[email protected]> |
 | 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) |
-| mirrors.hit.edu.cn | [HTTPS](https://mirrors.hit.edu.cn/msys2/) \| [RSYNC](rsync://mirrors.hit.edu.cn/msys2/) | [issue](https://github.com/msys2/msys2.github.io/issues/180) |
 | 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) |
 | fastmirror.pp.ua | [HTTPS](https://fastmirror.pp.ua/msys2/) \| [RSYNC](rsync://fastmirror.pp.ua/msys2/) | [website](https://fastmirror.pp.ua) |