How can I delete people from my friends list? I have been researching for days, but haven't been able to find the answer.
To remove a friend from your friends list, open the Social window by pressing O:
Then right click on your friend and select the "Remove" option from the menu. This will remove the person from your friends list.
Note: your friends list in WoW is actually your Battle.net friends list, removing a friend from within WoW will also remove them from within Starcraft 2 and Diablo 3.