All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
Describing those persons who are named after some Prophets with inappropriate descriptions does not detract from those Prophets, but it is not permissible to have disdain for people. Abdullaah ibn Mas’ood narrated that the Prophet said: "Anyone who has an atom’s weight of pride in his heart shall not enter Paradise." A man said: "A man likes that his clothes look nice and his shoes look nice." He (the Prophet) said: "Allaah is beautiful and He loves beauty. Pride is rejecting the truth (out of self-conceit) and disdaining people." [Al-Bukhari and Muslim]
Hence, there is nothing wrong with keeping those books if they principally contain what is useful. If it is possible to remove or cover the inappropriate descriptions which they contain, then this will be good; otherwise, removing them is not an obligation in principle, and it is permissible to keep them as they are.
Allaah Knows best.