A workgroup that is no longer needed can be deleted. A workgroup can be deleted using the server console from the publisher workgroup.  
- In the navigation pane, select Workgroups. 
 
- Right-click a workgroup in the list and select Delete Workgroup. 
 
- When prompted for confirmation to delete the workgroup click yes. 
 
- If an error occurs where the subscriber database cannot be cleaned up, repeat the process but select Unconditional delete.