If you must work with someone, or consider yourself to have an ethical obligation to follow this, this is good advice.
If you don't...
Just slowwwly remove your touchpoints with them. Freeze them out. Go through other channels. If you do this right, the person will feel like you have just gradually drifted apart, but won't be able to pinpoint a clear cause.
You don't have to try and get them fired, or anything (and that may backfire on you, so I don't recommend doing it.) But if enough people do this, then they will gradually be the most replaceable person on the team, and they may be let go regardless.