The act of removing a Facebook connection generally does not trigger a direct notification to the individual who has been removed. The platform is designed to avoid explicitly informing a user when another user unfriends them. Therefore, a person will not receive an alert stating that they have been unfriended by someone.
This lack of direct notification is important for maintaining user privacy and avoiding potential conflict. A system that directly alerted users could lead to uncomfortable social situations. The historical development of social media platforms has generally favored subtle indicators of connection changes over explicit announcements.