message: fix: remove rpc call to improve miner profermance
diff: @@ -35,11 +35,11 @@ impl Miner {
  }
  pub fn run(&self) {
  loop {
  - self.client.try_update_block_template();
  match self.mine() {
  Ok(result) => {
  if let Some((work_id, block)) = result {
  self.client.submit_block(&work_id, &block);
  + self.client.try_update_block_template();
  }
  }
  Err(e) => error!(target: "miner", "mining error encountered: {:?}", e),
  