[U-Boot] ENV_IS_EMBEDDED vs CONFIG_ENV_IS_EMBEDDED

is there a reason to keep ENV_IS_EMBEDDED around ? i see a few places that use CONFIG_ENV_IS_EMBEDDED, but it seems to be largely useless at the moment as the define doesn't really do anything without ENV_IS_EMBEDDED.

in other words, i'd like to just do a sed on the tree to convert all ENV_IS_EMBEDDED instances to CONFIG_ENV_IS_EMBEDDED. -mike