RCS and $FreeBSD$ purge

From: Steve Kargl <sgk_at_troutmask.apl.washington.edu>
Date: Sat, 27 Jan 2024 02:32:26 UTC
I'm currently syncing src/lib/msun with my private libm 
repository where I do much of my hacking on libm issues.
In looking at diffs, I see a few lingering RCS and
$FreeBSD$ tags.  For example, lib/msun/amd64/s_scalbnl.S
contains

/* RCSID("$NetBSD: s_scalbnf.S,v 1.4 1999/01/02 05:15:40 kristerw Exp $") */

Should this be cleaned up or ws intentional left in the 
source code?


-- 
Steve