Do not add a SESSION_PHONE description if we're not doing audio, in gtalk3
Do not add a SESSION_PHONE description if we're not doing audio, in gtalk3

jku/telepathy-gabble,jku/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,Ziemin/telepathy-gabble,Ziemin/telepathy-gabble,jku/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,mlundblad/telepathy-gabble