stand: Kill commented out line

This line is no longer needed as fallback, and should have been deleted
in 7870a52598 instead of commented out, but 26 years later, I have a
high degree of confidence that old change was right and we won't need
this line as a fallback.

Sponsored by:		Netflix
Reviewed by:		kevans, jhb
Differential Revision:	https://reviews.freebsd.org/D45880

(cherry picked from commit 65300ca729)

stand/common/newvers.sh

@@ -44,7 +44,6 @@ shift $((OPTIND - 1))
 
 LC_ALL=C; export LC_ALL
 u=${USER-root} h=${HOSTNAME-`hostname`} t=`date`
-#r=`head -n 6 $1 | tail -n 1 | awk -F: ' { print $1 } '`
 r=`awk -F: ' /^[0-9]\.[0-9]+:/ { print $1; exit }' $1`
 
 bootprog_info="FreeBSD/${3} ${2}, Revision ${r}\\n"