Nelly pulled mine out with a set of pliers - and then they are done. It is a lot more comfortable now - just need a front tyre that isn't scalloped to comeplete the transformation and I'll be very happy ... Spent an hour putting on new carbon bits today Woohoo!!
As weeksy says, split the swtich blocks and you'll see the pin there. You can either pull them out with pliers or cut them off, personally I prefer the cut them off approach ...