How to uninstall a 3rd Party Component
The process is the same as for 3rd Party Plugins and Modules.
To open the Extensions > Manage screen, select Extensions, then Manage from the menu at the top of your website's dashboard.
To uninstall a component select the component from the list and then the Uninstall button.
After you have uninstalled a component
Check that no database tables have been left behind by the uninstallation script.
Also check that no directories and files have been left behind.
If database tables and files have been left behind then they pose a security risk.