message: Remove unused GetKeyID and IsScript methods from CBitcoinAddress
  Coming from btc@8d0041e607a0e5bff52152f3d8af504f3703baa7
diff: @@ -252,8 +252,6 @@ public:
  CBitcoinAddress(const char* pszAddress) { SetString(pszAddress); }
  CTxDestination Get() const;
  - bool GetKeyID(CKeyID& keyID) const;
  - bool IsScript() const;
  bool IsStakingAddress() const;
  @@ -332,24 +330,6 @@ CTxDestination CBitcoinAddress::Get() const
  return CNoDestination();
  }
  -bool CBitcoinAddress::GetKeyID(CKeyID& keyID) const
  -{
  - if (!IsValid() ||
  - (vchVersion != Params().Base58Prefix(CChainParams::PUBKEY_ADDRESS) &&
  - vchVersion != Params().Base58Prefix(CChainParams::STAKING_ADDRESS)))
  - return false;
  - uint160 id;
  - memcpy(&id, &vchData[0], 20);
  - keyID = CKeyID(id);
  - return true;
  -}
  -
  -bool CBitcoinAddress::IsScript() const
  -{
  - bool fCorrectSize = vchData.size() == 20;
  - return fCorrectSize && vchVersion == Params().Base58Prefix(CChainParams::SCRIPT_ADDRESS);
  -}
  -
  bool CBitcoinAddress::IsStakingAddress() const
  {
  bool fCorrectSize = vchData.size() == 20;
  