You can just remove it and leave the hoses alone. It won't effect anything. I too have a California model, I removed the Evap. Can and installed a lift adapter in it's place. Later on when you de-smog there are a few extra steps you will have to do that aren't on the regular Valkyries but they are no big deal.
Sure, if you want Sportsters to pass you by. Vacuum lines need to by sealed or performance suffers. And yes, mine is a California Girl.