Remove a friend from Facebook and deactivate a Facebook account

How to delete friends from Facebook?
In order to delete friends from facebook follow the following steps:

1. Go to Account at the top and select Edit Friends.
2. Select Friends in the Lists section.
3. Just click on the cross mark next to the name of person you want to remove as a friend. A small box will now ask you whether you want to remove that person. Just select Remove.

How to delete a Facebook account?

1. Go to Account at the top and select Account Settings. 
2. Click on the deactivate link. Facebook will now ask you whether you really want to delete your facebook account. 
3. Just click on the Confirm button at the bottom.