How I can switch off additonal menu in Win2D Windows 10 Universal App

I just have simple question, where how to switch off this menu? LINK to pirntscreen I disable already frame counter in:

#if DEBUG
if (System.Diagnostics.Debugger.IsAttached)
{
    //this.DebugSettings.EnableFrameRateCounter = true;
}
#endif

in method :

protected override void OnLaunched(LaunchActivatedEventArgs e);

Solution

This UI is coming from XAML, not Win2D.