message: Remove sig verifier construction
diff: @@ -1734,8 +1734,7 @@ UniValue elysium_sendspend(const UniValue& params, bool fHelp)
  SigmaV1SignatureBuilder sigBuilder(address, referenceAmount, spend.proof);
  auto signature = sigBuilder.Sign(key);
  - SigmaV1SignatureBuilder sigVerifier(address, referenceAmount, spend.proof);
  - if (!sigVerifier.Verify(pubkey, signature)) {
  + if (!sigBuilder.Verify(pubkey, signature)) {
  throw JSONRPCError(RPC_WALLET_ERROR, "Fail to create valid signature to spend.");
  }
  