message: Removing is_empty from network/onchain-discovery/src/types.rs
  Closes:
  Approved by: huitseeker
diff: @@ -161,10 +161,6 @@ impl DiscoverySetInternal {
  Self(HashMap::new())
  }
  - pub fn is_empty(&self) -> bool {
  - self.0.is_empty()
  - }
  -
  pub fn len(&self) -> usize {
  self.0.len()
  }
  