Remove Faravahar from BANDWIDTH_AUTHORITIES

Faravahar is gone, see: tpo/core/tor#40688 (closed) for details.

Closes: #40030 (closed).

added Needs Review label

requested review from @juga

assigned to @gk

lgtm. Just in case, i searched for "Faravahar" in this seems to be the only place where it was.

merged