While you may want your friends to know when you send messages and tag them in photos, unfriending can be awkward enough without official Facebook notification. Facebook does offer tools to help safeguard the privacy of members without the need to officially unfriend. In the end, although Facebook does not notify members regarding unfriending and blocking, unfriending may still be evident. Writer Bio

Do Friends Receive a Notification When You Delete Them From Your Facebook  - 10