New comment by not-chicken on void-packages repository

https://github.com/void-linux/void-packages/issues/21862#issuecomment-629275777

Comment:
> As a side note, if the decision is that DMs shouldn't have `xorg-server` as a (direct or indirect) dependency, then the `gdm` package will need to be modified to reflect that, since as i wrote above, it currently pulls in `xorg-server`.
> 
> (Ping @mnabid and @not-chicken, who are currently working on packaging GNOME 3.36.)

Gentoo's `gdm`  ebuild has this: https://bugs.gentoo.org/295686 marked as reason for having `xorg-server` as a rundep.  I wasn't able to reproduce it now though( would be better if someone else can test too) as it probably got fixed upstream sometime during the decade. If it's confirmed fixed, we can remove `xorg-server` safely.