conn-presence: stop using _gabble_connection_send_with_reply()
conn-presence: stop using _gabble_connection_send_with_reply()

_gabble_connection_send_with_reply() does not call its callback if it
doesn't get a reply. This means all these cases were leaking the
GSimpleAsyncResult if the connection died while the IQ was in flight.

Ziemin/telepathy-gabble,Ziemin/telepathy-gabble,Ziemin/telepathy-gabble,Ziemin/telepathy-gabble