To remove a camera use the following options -
1. Revert your configuration to just before the Camera was added. You can do this by opening your site and clocking configure. There will be a "Revert" option in the menu bar at the top of the screen. click this and select a configuration prior to the unwanted camera's install. Then click Publish. Note: Any changes to the site between camera install and removal will be removed.
2. Reset the Processor to Factory Default and reconfigure your intersection.