The developer suggests to uninstall the application using Add or Remove Programs feature. You can check the official web page for further information.
If you can't remove the utility following the provided steps, you can try Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, try running AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system.