Scenes and hiding devices

I´m using UI4 for a while without major problems, but there are two minor issues that are annoying me a little bit.
Is there a way to disable the scene confirmation message “The command to test the scenario was sent.” ou UI4?
Also, is there a way to hide a device on dashboard on UI4 like it was done on UI2? I have several IR devices and “auxiliary” scenes that are just polluting the interface.

Thanks in advance and regards

Does not appear to be as the user interface is now integrated (both functions of editing and using are now one interface as opposed to 2 as they were in UI2).

Suggestion; move devices to “Unassigned” and they will all be in one area that you can click the “-” to reduce in the UI.