Scrub connection info for any non-relay

Nyx attempts to be a bit too smart with its 'should I scrub connection info?' check. As teor points out there's quite a few scenarios where this can go wrong...

https://lists.torproject.org/pipermail/tor-relays/2018-September/016153.html

Presently the check is 'scrub the connection if it isn't in the consensus and I'm a bridge, guard, or exit'. We should drop this second clause (ie. scrub anything not in the consensus).