message: [Bug][Wallet] Fix CWallet::GetMinimumFee improperly set to feePerKb
  nFeeNeeded is an absolute value (feePerKb * txKb).
diff: @@ -2800,9 +2800,6 @@ CAmount CWallet::GetMinimumFee(unsigned int nTxBytes, unsigned int nConfirmTarge
  {
  // payTxFee is user-set "I want to pay this much"
  CAmount nFeeNeeded = payTxFee.GetFee(nTxBytes);
  - // user selected total at least (default=true)
  - if (fPayAtLeastCustomFee && nFeeNeeded > 0 && nFeeNeeded < payTxFee.GetFeePerK())
  - nFeeNeeded = payTxFee.GetFeePerK();
  // User didn't set: use -txconfirmtarget to estimate...
  if (nFeeNeeded == 0)
  nFeeNeeded = pool.estimateFee(nConfirmTarget).GetFee(nTxBytes);
  