linuxrc: do not look for ${REAL_INIT} inside the mounted partition

If ${REAL_INIT} is on a separate partition, the check will erroneously
fail. Don't try to be too smart and fix bug #479730

defaults/linuxrc

@@ -499,15 +499,8 @@ do
 		# If mount is successful break out of the loop
 		# else not a good root and start over.
 		if [ "$?" = '0' ]
-		then
-			if [ -d ${NEW_ROOT}/dev -a -x "${NEW_ROOT}${REAL_INIT:-/sbin/init}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 		then
 			break
-			else
-				bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
-				got_good_root=0
-				REAL_ROOT=''
-			fi
 		else
 			bad_msg "Could not mount specified ROOT, try again"
 			got_good_root=0