NetBSD compat shims in rc.subr

[Ed Maste]

There's a vestigial bit of NetBSD compat shim in rc.subr that I'd
like to clean up; any objections to the patch below?

Index: etc/rc.subr
===================================================================
--- etc/rc.subr	(revision 202731)
+++ etc/rc.subr	(working copy)
@@ -52,22 +52,12 @@
 
 SYSCTL="/sbin/sysctl"
 SYSCTL_N="${SYSCTL} -n"
-CMD_OSTYPE="${SYSCTL_N} kern.ostype"
-OSTYPE=`${CMD_OSTYPE}`
+SYSCTL_W="${SYSCTL}"
 ID="/usr/bin/id"
 IDCMD="if [ -x $ID ]; then $ID -un; fi"
 PS="/bin/ps -ww"
 JID=`$PS -p $$ -o jid=`
 
-case ${OSTYPE} in
-FreeBSD)
-	SYSCTL_W="${SYSCTL}"
-	;;
-NetBSD)
-	SYSCTL_W="${SYSCTL} -w"
-	;;
-esac
-
 #
 #	functions
 #	---------