package/qpid-proton: disable languages bindings

Fixes (workaround):
http://autobuild.buildroot.net/results/eff48f8a827f8b4dbbdb7cb648a6c4a3ab4ac8a5/



Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Cc: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>