I found a way. There is no need for the TestUI to stay in the game, so all you have to do is remove the TestUI script, and then you're ready to go. It will still authenticate the game as long as you have the other 2 scripts attached to the main level.
Is there a way to hide the GameSparks Manager? I have it start at the very beginning of the game but would like it to be invisible.
I tried adding it to a layer and doing culling mask on the camera but didn't do the trick.