Should have been removed with
92f956d tweak read_only_rootfs_hook to also support systemd based systems
Signed-off-by: Ross Burton <ross.burton@intel.com>
 
 do_rootfs[umask] = "022"
 
 # A hook function to support read-only-rootfs IMAGE_FEATURES
-# Currently, it only supports sysvinit system.
 read_only_rootfs_hook () {
        # Tweak the mount option and fs_passno for rootfs in fstab
        sed -i -e '/^[#[:space:]]*\/dev\/root/{s/defaults/ro/;s/\([[:space:]]*[[:digit:]]\)\([[:space:]]*\)[[:digit:]]$/\1\20/}' ${IMAGE_ROOTFS}/etc/fstab