soredake [1] filed a deletion request for dxvk-winelib [2]:

https://github.com/doitsujin/dxvk/commit/436357e28096f5e1e25aa8b72fceb77123ea8404

[1] https://aur.archlinux.org/account/soredake/
[2] https://aur.archlinux.org/pkgbase/dxvk-winelib/

The version pointed by the tag still builds correctly under wine. The commit you are pointing to

is after the tag built by this package. And even so, since this package builds correctly for this version,

what is the problem with it existing? Why should this be deleted?