You mean how to make it off when you start a new scene? If that's what you mean, hide the ground (Ctrl-G). Then go into Preferences. Choose Launch to Preferred State. Then click Set Preferred State to make the current scene and settings be your default settings.

Alternatively, I find it helpful to have several prepared "empty" scenes. I save these and just load one of those instead of using File New. That way, I have ready a portrait studio, an outdoor scene, a shader testing stage, etc.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)