If you're no longer using the TimeTracker application and your license has expired, we recommend uninstalling it from your Production org.
Why uninstall?
When you refresh your Sandbox, all objects, fields, and components from Production are copied over. To avoid this, it's best to uninstall the app if it's no longer in use.
Click here to learn how to uninstall the TimeTracker app from your org.
For help, contact us at support@pk4.tech.