To change(a book, play, movie, etc) by removing parts that may be offensive for some people.
1) The theatre management bowdlerized the play, by removing offensive language.
2) A bowdlerized version of "Gulliver's Travels" was printed to make it unobjectionable for children.
Thomas Bowdler who was an 1825 English editor.
expurgate, censor, clean(up), launder, red-pencil
approve, authorise, sanction.