Don't build the now-included vala bindings: This requires gobject-introspection.
(From OE-Core rev: 25991b97ce027d1ff9b803f4ab57350659465fd8)
Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>