message: refactor: remove low S check from util-crypto
diff: @@ -50,15 +50,6 @@ impl Signature {
  Signature(sig)
  }
  - /// Check if this is a "low" signature.
  - pub fn is_low_s(&self) -> bool {
  - if let Ok(h_s) = H256::from_slice(self.s()) {
  - h_s <= HALF_N
  - } else {
  - false
  - }
  - }
  -
  /// Check if each component of the signature is in range.
  pub fn is_valid(&self) -> bool {
  let h_r = match H256::from_slice(self.r()) {
  