Revert "certctl: Set METALOG ownership to root:wheel"

This introduces a circular dependency because it requires an existing
dbdir for install -N, which might not yet exist.

I imagine we can use install -o 0 -g -0, avoiding the need for the
dbdir, but install emits uname=0 gname=0 rather than uid=0 gid=0.
So just revert for now pending a full fix.

This reverts commit 10fa3f2518d4582c98d74527f79af9f30b1eceab.

PR: 283340
Event: January 2025 Bug-busting session
Sponsored by: The FreeBSD Foundation