Configuration Manager 2007 site systems are assigned site system roles to help support the site and its clients. Each site system can be individually assigned different site system roles. The site system roles assigned to individual site systems can be deleted in the Configuration Manager console.
To delete site system roles from site systems in the Configuration Manager console
In the Configuration Manager console of the primary site server, navigate to System Center Configuration Manager / Site Database / Site Management / <site code> - <site name>/ Site Settings / Site Systems / <site system name>.
In the results pane, right-click the site system role currently assigned to the site system and click Delete.
Verify that you are sure you want to delete this site system role by clicking Yes on the Confirm Delete dialog box.
Note After confirmation, the site server will begin the process of removing the site roles from the computer which may take several minutes.