You can uninstall the Smart Connect by using the same GPO that was previously created to deploy Smart Connect to your users.
To uninstall Smart Connect with an Active Directory Group Policy Object
Close the Group Policy Object Editor window, and then close the Group Policy Management window.
The software uninstalls when the client computers are restarted. By using Group Policy - Preferences Scheduled Tasks, you can ensure that every computer automatically reboots at the end of the day.
For any other software deployment management software, consult the corresponding documentation.