JamiAccount - Placing calls through DHT: Remove obsolete code
Placing calls through DHT is no more supported. All related code must be removed.
See https://review.jami.net/c/ring-daemon/+/15663
ICE/UDP component created in JamiAccount must be removed.
Support for ICE message packaging "version 1" must be dropped as well (see IceTransport::packIceMsg(uint8_t version)).