I think were there sufficient demand to counterbalance the potential awkwardness of publishing something which will offend, they would still be publishing it. Nobody is stopping them doing so. Indeed, if someone felt so strongly about this that they wished to see it re-published, there is probably a sum of money which would acquire the rights and allow them to do so. This book has not been banned. Should someone acquire the rights to it and decide to publish, they may do so unhindered.

There are, however, many creative works which are no longer published because they are just too far from what people would see as fine now. They're generally unlamented, but nothing is stopping someone from publishing them again, if they fancy losing money.