message: remove unused inv from ConnectTip()
diff: @@ -2802,7 +2802,6 @@ bool static ConnectTip(CValidationState& state, CBlockIndex* pindexNew, CBlock*
  int64_t nTime3;
  LogPrint(BCLog::BENCH, " - Load block from disk: %.2fms [%.2fs]\n", (nTime2 - nTime1) * 0.001, nTimeReadFromDisk * 0.000001);
  {
  - CInv inv(MSG_BLOCK, pindexNew->GetBlockHash());
  bool rv = ConnectBlock(*pblock, state, pindexNew, view, false, fAlreadyChecked);
  GetMainSignals().BlockChecked(*pblock, state);
  if (!rv) {
  @@ -2810,7 +2809,7 @@ bool static ConnectTip(CValidationState& state, CBlockIndex* pindexNew, CBlock*
  InvalidBlockFound(pindexNew, state);
  return error("ConnectTip() : ConnectBlock %s failed", pindexNew->GetBlockHash().ToString());
  }
  - mapBlockSource.erase(inv.hash);
  + mapBlockSource.erase(pindexNew->GetBlockHash());
  nTime3 = GetTimeMicros();
  nTimeConnectTotal += nTime3 - nTime2;
  LogPrint(BCLog::BENCH, " - Connect total: %.2fms [%.2fs]\n", (nTime3 - nTime2) * 0.001, nTimeConnectTotal * 0.000001);
  