message: testing contract: remove unused Error variant
diff: @@ -6,7 +6,4 @@ pub enum HackError {
  #[error("{0}")]
  /// this is needed so we can use `bucket.load(...)?` and have it auto-converted to the custom error
  Std(#[from] StdError),
  - // this is whatever we want
  - #[error("Unauthorized")]
  - Unauthorized {},
  }
  