message: removed impls
diff: @@ -125,15 +125,6 @@ impl TryFrom<u8> for Error {
  }
  }
  -/// An error from parsing a unformatted contract string
  -#[derive(Debug)]
  -pub enum TryFromUnformattedStrError {
  - /// Error when decoding a hex string
  - Hex(base16::DecodeError),
  - ///
  - Hash(TryFromSliceForContractHashError),
  -}
  -
  /// Associated error type of `TryFrom<&[u8]>` for `ContractHash`.
  #[derive(Debug)]
  pub struct TryFromSliceForContractHashError(());
  @@ -457,18 +448,6 @@ impl AsRef<[u8]> for ContractHash {
  }
  }
  -impl TryFrom<&str> for ContractHash {
  - type Error = TryFromUnformattedStrError;
  - fn try_from(hex_string: &str) -> Result<Self, Self::Error> {
  - let raw_bytes = checksummed_hex::decode(hex_string)
  - .map_err(|decode_error| TryFromUnformattedStrError::Hex(decode_error))?;
  -
  - let hash_addr = HashAddr::try_from(raw_bytes)
  - .map_err(|_| TryFromUnformattedStrError::Hash(TryFromSliceForContractHashError(())))?;
  - Ok(ContractHash(hash_addr))
  - }
  -}
  -
  impl TryFrom<&[u8]> for ContractHash {
  type Error = TryFromSliceForContractHashError;
  @@ -617,18 +596,6 @@ impl AsRef<[u8]> for ContractPackageHash {
  }
  }
  -impl TryFrom<&str> for ContractPackageHash {
  - type Error = TryFromUnformattedStrError;
  - fn try_from(hex_string: &str) -> Result<Self, Self::Error> {
  - let raw_bytes = checksummed_hex::decode(hex_string)
  - .map_err(|decode_error| TryFromUnformattedStrError::Hex(decode_error))?;
  -
  - let hash_addr = HashAddr::try_from(raw_bytes)
  - .map_err(|_| TryFromUnformattedStrError::Hash(TryFromSliceForContractHashError(())))?;
  - Ok(ContractPackageHash(hash_addr))
  - }
  -}
  -
  impl TryFrom<&[u8]> for ContractPackageHash {
  type Error = TryFromSliceForContractHashError;
  