linuxrc: don't try to be too smart wrt resolving REAL_ROOT symlink

This breaks LVM support with udev, don't do it, there is absolutely no reason

defaults/linuxrc

@@ -643,9 +643,6 @@ do
 		if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 			findnfsmount
 		else
-			# If $REAL_ROOT is a symlink
-			# Resolve it like util-linux mount does
-			[ -L ${REAL_ROOT} ] && REAL_ROOT=`readlink ${REAL_ROOT}`
 			# mount ro so fsck doesn't barf later
 			if [ "${REAL_ROOTFLAGS}" = '' ]; then
 				good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE}"