bowdlerize

Because, like her correspondence to him, they’re bowdlerized by government censors.

She should not be allowed to disguise and bowdlerize it to suit the unwelcome tastes she had acquired at school.

I have no wish to bowdlerize Sir Richard Steele, his ways and words.

This is called "expurgating" the book; but people who disapprove often call it to bowdlerize.