message: [accumulator] remove test method
diff: @@ -99,7 +99,6 @@ impl MerkleAccumulator {
  self.tree.lock().get_id()
  }
  - #[cfg(test)]
  pub fn get_node_from_storage(&self, hash: HashValue) -> AccumulatorNode {
  self.node_store.get_node(hash).unwrap().unwrap()
  }
  