I have two sides to this.
Yes, get rid of it.
As far as I'm concerned about Bookie, it's just another way that members earn ridiculous amounts of vBux without putting major work in. vBux is massively inflated already, and has been for a while. That, plus the fact some certain past Bookies have seemed not to give a shit about the system, either not posting or not settling events. If there's less people using it, why keep it?
No, keep it.
There's a reason I put this part second. It doesn't matter how many or how little users actually use (or abuse) the vBookie system, if there's people using it on a daily basis, you're removing a feature for them to use. Not just that, but if you did get rid of it you'd need to find a new feature for people to waste vBux on, otherwise everyone would end up with millions. Another thing to think about is, if you get rid of it, there is going to be tons of suggestions about bringing it back, lots of PM hate, and users could even threaten to leave the site. At least if it's there, you are giving them a choice whether or not to use it, rather than removing the option completely. In addition, what would you be saying to all the vBookies who have worked on the site, past and present? "Thanks for everything but we have no use for you now.". As far as I'm concerned, scrapping Bookie will only bring more problems, and so I have voted to keep it.
Personally speaking, I dislike vBookie. I think it's pointless. I think I've only used it about three times, max. But that's just me.