Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Move all syslogd related configs to usr.sbin/syslogd/

This helps with pkgbase as it switches these to use CONFS which properly tags
them as config files.

Approved by: will (mentor)
Differential Revision: https://reviews.freebsd.org/D16783