Rip out the bridge support.
sandboxed-tor-browser knows how to connect via bridges using obfs4proxy, but it probably shouldn't.
- I don't test it.
- It breaks randomly.
- It objectively weakens the protections made to the tor container (seccomp).
- I haven't been updating the default bridge list.
- There's a huge mess of UI code that will go away if this was gone.