GNOME 43 will no longer need these packages. They seem to be in varying
states of decay upstream.

- net-im/telepathy-connection-managers
- net-libs/farstream
- net-libs/sofia-sip
- net-libs/telepathy-farstream
- net-voip/telepathy-gabble
- net-voip/telepathy-rakia
- net-voip/telepathy-salut

These are maintained upstream, but GNOME 43 doesn't need them.
gstreamer@ was a backup (and is now the primary) maintainer of
media-plugins/gst-plugins-libnice, so it should probably take over
net-libs/libnice as well.

- media-plugins/gst-plugins-libnice
- net-libs/libnice

I've dropped gnome@ as a maintainer of all of these packages.