No, we do not reject this notion any more than you reject the idea of self-mutilation in order to prevent sin.
If your right eye causes you to stumble, gouge it out and throw it away. It is better for you to lose one part of your body than for your whole body to be thrown into hell. And if your right hand causes you to stumble, cut it off and throw it away. It is better for you to lose one part of your body than for your whole body to go into hell. (Matt. 5:29–30)
I have not seen the suggestion in formal Catholic documents, or in discussion forums like this one, that we are actually supposed to cut off our limbs if need be. Would you say that you, therefore, reject this passage?