As the plugin is end of life the end of December 2021 - we have outlined the methods to remove plugin and default components from your Automate instance.
Group Removal
In Control Center client - Browse>Groups then right click on Stack Configuration Manager group and choose Delete
When prompted to confirm Delete Group? - click Delete
Internal Monitors Removal
In Control Center Client - click Automation>Monitors
Click on the Internal Monitors tab and select the two rows for Config Manager - Out of Compliance monitors - then right click and choose Delete Monitor
When prompted Delete this Monitor? Click Yes to each