How do delete from my friends list on call of duty black ops on ps3?

To delete a friend from your friends list in Call of Duty: Black Ops on PS3, go to the main menu and select "Multiplayer." Then, navigate to the "Friends" option. Find the friend you want to remove, highlight their name, and press the appropriate button to access options (usually the triangle button). From there, you can select "Remove Friend" to delete them from your list.