How to disable "Swiftui in Unreal" popup on VisionOS

Hi. Im exploring my new vision pro with visionos 2.0. I’ve packaged default VR template and ran it on my headset.
When app starts it displays “SwiftUI in Unreal” window with test button. Also theres a sound playing when this window is open. How do i remove this window and sound from my project? What part of unreal engine is calling this window?