If you want to remove a system from Patchdeck you should uninstall the agent and then remove the system in the console.

Remove the system from the console

1. Go to https://patchdeck.com/patch_management
2. Click the “Delete” button for the system you want to remove and confirm on the next page
3. Thats it. The system will no longer be managed via your Patchdeck console. To re-enroll the system just follow the instruction on how to install the Patchdeck agent.