These were added to the avahi-dev package back in 2011 before avahi-ui existed
at all. The problem of GTK+ being pulled in via avahi-dev was finally solved
with the avahi-ui split, so these explicit (and by being manually maintained,
incomplete) dependencies can be removed.
This also results in gettext-dev being removed from the dependency tree (the
gettext library API is provided by glibc/musl), which means that for a standard
image we don't need to build target gettext at all anymore.
Signed-off-by: Ross Burton <ross.burton@intel.com>
