How to remove Test from Smart Home in Hue app?

It could not remove or swipe etc. any idea?

That’s just another home in the Hue app. You can remove that in Settings → Homes in the Hue app. Press the “i” icon next to the “Test” home and there you can remove it.

Also, it seems like your question is not related to Homey. This is a forum specifically for questions about the Homey smart home hub.