was going to say the same. editing is normal. heck, look how many times that bible thing has been rewritten. if people can change the word of god 
, changing a secular book of mystery seems totally fair too
i do think stumbling across racist slurs and tropes while trying to enjoy a book sucks ( happens in old sci fi from time to time ) and im not even the target of those slurs. 
maybe an annotated version, with the original text in an appendix, might address things better than complete erasure
