message: [GUI] sendCoinsdialog, removing zero tx fee checkbox and label.
diff: @@ -133,9 +133,14 @@ SendCoinsDialog::SendCoinsDialog(QWidget* parent) : QDialog(parent, Qt::WindowSy
  ui->sliderSmartFee->setValue(settings.value("nSmartFeeSliderPosition").toInt());
  ui->customFee->setValue(settings.value("nTransactionFee").toLongLong());
  ui->checkBoxMinimumFee->setChecked(settings.value("fPayOnlyMinFee").toBool());
  - ui->checkBoxFreeTx->setChecked(settings.value("fSendFreeTransactions").toBool());
  + //ui->checkBoxFreeTx->setChecked(settings.value("fSendFreeTransactions").toBool());
  ui->checkzPIV->hide();
  + // Making zero fee txes option not visible (no need to clean this.. wallet 4.0 is right behind the corner)
  + ui->checkBoxFreeTx->setChecked(false);
  + ui->checkBoxFreeTx->setVisible(false);
  + ui->labelFreeTx->setVisible(false);
  +
  minimizeFeeSection(settings.value("fFeeSectionMinimized").toBool());
  // If SwiftX activated hide button 'Choose'. Show otherwise.
  ui->buttonChooseFee->setVisible(!useSwiftTX);
  