message: Removing short_str from types/src/transaction/authenticator.rs
  Closes:
  Approved by: davidiw
diff: @@ -189,11 +189,6 @@ impl AuthenticationKey {
  array
  }
  - /// Return an abbreviated representation of this authentication key
  - pub fn short_str(&self) -> String {
  - hex::encode(&self.0[..4])
  - }
  -
  /// Construct a vector from this authentication key
  pub fn to_vec(&self) -> Vec<u8> {
  self.0.to_vec()
  