Revert r285018 and r285019, which attempted to resolve

UFS/MSDOSFS label issues on FreeBSD/arm builds, however
the real problem was addressed in r285076, which is due
to two separate issues, unrelated to md(4) stale device
existence.

MFC after:	3 days
X-MFC-With:	r285076
X-MFC-Before:	10.2-BETA1
Sponsored by:	The FreeBSD Foundation

release/tools/arm.subr

@@ -63,18 +63,6 @@ umount_loop() {
 }
 
 arm_create_disk() {
-	# XXX: This is potentially dangerous, but works around an issue
-	#      properly labeling md(4) devices when the label already
-	#      exists.
-	#      EVERYTHINGISFINE should *never* be set for non-RE use.
-	#      Trust me.  I'm an engineer.
-	if [ ! -z "${EVERYTHINGISFINE}" ]; then
-		for _label in ufs/rootfs msdosfs/MSDOSBOOT; do
-			if [ -e "/dev/${_label}" ]; then
-				rm /dev/${_label}
-			fi
-		done
-	fi
 	# Create the target raw file and temporary work directory.
 	chroot ${CHROOTDIR} gpart create -s ${PART_SCHEME} ${mddev}
 	chroot ${CHROOTDIR} gpart add -t '!12' -a 63 -s ${FAT_SIZE} ${mddev}