If using Mobile Web (not the App), click HERE.
If using the App, click HERE.
Oh dear! We hope you don't need to remove friends often, but if you do it's simple...
Log into your account. Visit their profile and click "Remove Friend". That's it. They will be removed from your friend list right away.
Now that you know how to delete friends, click HERE to go to the Home Feed so you can find some new ones! :-)