It can go. I kept mine with the wires that lead to the child safety flashers still connected, so I can keep track of what wire goes where. I deleted the actual lights, and of course deleted the power feed into the unit shown, but if I ever want to add spotlights for camping in the back, or off-road high-beams in front, I know what wire is what, at least in that electrical panel. Too bad the front and rear lights are fed from the same wire at that unit. That would make it all much easier to add features.
If you haven't already found out, you can't get the wiring diagrams for the 1999 through the Bluebird Vantage portal with your VIN. (I could not at least)
These guys have it for a later model All American, and I think it is similar if not the same:
https://www.centralstatesbus.com/2003_bbaa/a3mtocs
BlueBird Vantage portal:
https://vantage.blue-bird.com/Portal/Vantage-Home.aspx