It would be cool if there was an option in Bitcoin Core for disabling the system tray entirely.

case ThreadsScriptVerif:
            if (settings.value("nThreadsScriptVerif") != value) {
                settings.setValue("nThreadsScriptVerif", value);
                setRestartRequired(true);
            }
            break;
        case Listen:
            if (settings.value("fListen") != value) {
                settings.setValue("fListen", value);
                setRestartRequired(true);
            }
            break;
        default:
            break;
        }
    }
    Q_EMIT dataChanged(index, index);
    return successful;
}
void OptionsModel::setDisplayUnit(const QVariant &value)
{
    if (!value.isNull())
    {
        QSettings settings;
        nDisplayUnit = value.toInt();
        settings.setValue("nDisplayUnit", nDisplayUnit);
        Q_EMIT displayUnitChanged(nDisplayUnit);
    }
}
bool OptionsModel::getProxySettings(QNetworkProxy& proxy) const