Thank you!

go onto fanfiction, your favourite authors will be at the
top. click on the one that you want to get rid of, and at
the bottom of their fics will be a link saying, 'remove
author from favourites'. click on it and you won't have that
author as your favourite anymore.

First you click on the person you faved,(my clicking the
fan fiction tab) **and you can view** Click a name you want to erase and scroll down untill you get to the
little heart, then it says 'remove the from my favorites'
and you got it.