How to delete an HCM Group created by mistake

Summary

We created a HCM Group by accident. Now we want to delete it, Do not see a way to do so.

Content

We have this entry in our HCM Group list that we want to delete as we created it by mistake. The one highlighted in yellow in the pictured.  I've searched though documentation but only see the information on how to create an HCM Group, not how to delete.   We have not used it any way or tied it to anything.  So we should be able to delete it.  

Version

20C - Getting ready to receive 20D