How to remove cameras I'm no longer using on the Mac for web conferencing

From Iris here - https://community.zoom.com/t5/Meetings/How-to-remove-cameras-from-drop-down-list-from-video-camera/m-p/1252

In this case, maybe the cameras did not uninstall successfully. If you are using mac, can you please please check below file path to see if the cameras are there: /Library/CoreMediaIO/Plug-Ins/DAL