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

#ifndef BITCOIN_QT_OPTIONSDIALOG_H
#define BITCOIN_QT_OPTIONSDIALOG_H
#include <QDialog>
#include <QValidator>
class OptionsModel;
class QValidatedLineEdit;
QT_BEGIN_NAMESPACE
class QDataWidgetMapper;
QT_END_NAMESPACE
namespace Ui {
class OptionsDialog;
}
/** Proxy address widget validator, checks for a valid proxy address.
 */
class ProxyAddressValidator : public QValidator
{
    Q_OBJECT
public:
    explicit ProxyAddressValidator(QObject *parent);
    State validate(QString &input, int &pos) const;
};
class OptionsDialog : public QDialog