message: chore: remove some unused code
diff: @@ -258,11 +258,6 @@ impl Transaction {
  sha3_256(serialize(&self).unwrap()).into()
  }
  - pub fn check_lock(&self, unlock: &[u8], lock: &[u8]) -> bool {
  - // TODO: check using pubkey signature
  - unlock.is_empty() || !lock.is_empty()
  - }
  -
  pub fn out_points_iter(&self) -> impl Iterator<Item = &OutPoint> {
  self.deps.iter().chain(
  self.inputs
  