DEPENDS_GETTEXT defaults to gettext-native, so there's no need to set it again
in these classes.
(From OE-Core rev: 5e4b1915e7a5a94d410c5292b5ed2f447c82b18a)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>