I don't think it was actually removed, just that the scenes were moved to take place after Danielle's anal training. The same as when fisting Janet's ass was moved to only be possible after her (pretty extreme) anal training.
Thanks for the answers guys!that's why i said i barely remember reading about it. It was something like ''removed for now''.
So that means it will probably be available in the future versions, since you can't complete the training cause there is that last "extra thick" toy she doesn't want to try yet right?