any mod that hides the button prompts?

immersive hud does not let me do this

is there a mod that will?

What do you mean with button promts? The messageboxes?

If this is the case then no.

A mod could hide the messageboxes by makeing them invisble, but since messageboxes pause the game you would still need to close them, which would make it useless.

Do you mean hide the symbol for the currently bound activate button/key in the HUD?

I think http://www.nexusmods.com/skyrim/mods/35154/ might do that