I have no idea when I have previously looked into those two files (git
history would probably tell me), but I don't think they make much sense,
while the important parts can be cut into conf.d/ and applied
individually as needed.
Strangely Itwjyg is a special case system where I need systemd-resolved
and its opportunistic DNSSEC/DoT. I also accidentally forgot
dns-none.conf (then dns.conf) there, but systemd-resolved.conf appears
to have overridden it, so it was fine and I have now removed the extra
one.