Apple Watch removed from Apple ID still appears in macOS Security
I erased an Apple Watch some weeks ago. It was still listed in iCloud Devices today, so I "Removed from Account." It no longer appears in iCloud, however it still appears as an unlock option in System Prefs, Security. This has persisted across restart on both a Catalina and Mojave Mac.
Why would this be the case, and how can i remove it from here?
Mac mini 2018 or later