message: Address review comments by
diff: @@ -206,7 +206,6 @@ fn do_not_download_synchronized_dependencies() {
  assert!(sync.is_empty());
  }
  -#[cfg(test)]
  fn unwrap_single<T: Debug>(vec: Vec<T>) -> T {
  assert_eq!(
  vec.len(),
  @@ -217,7 +216,6 @@ fn unwrap_single<T: Debug>(vec: Vec<T>) -> T {
  vec.into_iter().next().unwrap()
  }
  -#[cfg(test)]
  fn assert_targeted_message(
  outcome: &ProtocolOutcome<NodeId, TestContext>,
  peer: &NodeId,
  