message: Clean systray icon menu for -disablewallet mode
  Ref
diff: @@ -620,14 +620,16 @@ void BitcoinGUI::createTrayIconMenu()
  trayIconMenu->addAction(toggleHideAction);
  trayIconMenu->addSeparator();
  #endif
  + if (enableWallet) {
  trayIconMenu->addAction(sendCoinsMenuAction);
  trayIconMenu->addAction(receiveCoinsMenuAction);
  trayIconMenu->addSeparator();
  trayIconMenu->addAction(signMessageAction);
  trayIconMenu->addAction(verifyMessageAction);
  trayIconMenu->addSeparator();
  - trayIconMenu->addAction(optionsAction);
  trayIconMenu->addAction(openRPCConsoleAction);
  + }
  + trayIconMenu->addAction(optionsAction);
  #ifndef Q_OS_MAC // This is built-in on Mac
  trayIconMenu->addSeparator();
  trayIconMenu->addAction(quitAction);
  