message: remove PoS warning for v2.1.7
diff: @@ -3832,8 +3832,8 @@ bool ProcessNewBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, CDis
  // ppcoin: check proof-of-stake
  // Limited duplicity on stake: prevents block flood attack
  // Duplicate stake allowed only when there is orphan child block
  - if (pblock->IsProofOfStake() && setStakeSeen.count(pblock->GetProofOfStake())/* && !mapOrphanBlocksByPrev.count(hash)*/)
  - return error("ProcessNewBlock() : duplicate proof-of-stake (%s, %d) for block %s", pblock->GetProofOfStake().first.ToString().c_str(), pblock->GetProofOfStake().second, pblock->GetHash().ToString().c_str());
  + //if (pblock->IsProofOfStake() && setStakeSeen.count(pblock->GetProofOfStake())/* && !mapOrphanBlocksByPrev.count(hash)*/)
  + // return error("ProcessNewBlock() : duplicate proof-of-stake (%s, %d) for block %s", pblock->GetProofOfStake().first.ToString().c_str(), pblock->GetProofOfStake().second, pblock->GetHash().ToString().c_str());
  // NovaCoin: check proof-of-stake block signature
  if (!pblock->CheckBlockSignature())
  