removal of gdnsd

Hi,

I was thinking of dropping/removing current version 2 of gdnsd,
so that somone can just start from scratch with a 3 version port.

The update is not trivial because they changed a lot of things 
from version 2->3, see: https://github.com/gdnsd/gdnsd/blob/main/VERSION3.md

Most important, they dropped service support and expect systemd 
alike to handle. I believe rc system supports this nowadays via rc_bg=NO 
and similar. I also believe ports tree contains already very similar n
on-daemon rc script examples, i.e. audio/navidrome.

Still, last time (months ago) I looked into gdnsd latest version needed 
some minor patches to compile, but I eventually got it working.

However, unfortunately ENOTIME right now to update it.

So any objections or OKs for removing it?

Thanks,
Regards,
Joerg (jung@)