From the tor 0.3.1.1-alpha changelog entry:

"
    - These configuration options are now marked Obsolete, and no longer
      have any effect: AllowInvalidNodes, AllowSingleHopCircuits,
      AllowSingleHopExits, ExcludeSingleHopRelays, FastFirstHopPK,
      TLSECGroup, WarnUnsafeSocks. They were first marked as deprecated
      in 0.2.9.2-alpha and have now been removed. The previous default
      behavior is now always chosen; the previous (less secure) non-
      default behavior is now unavailable.
"

refs #18216