Using the Delete a Class wizard —
Step 1: Select Class to Delete
Use the Class drop-down menu to select the class you want to delete.
The drop-down includes classes that are contained the rulesets listed on your ruleset list. On a large system it may take a while for this list to populate after you click in the field. Expand the drop-down box and make your selection.
After you have made your selection, click the Next >> button.
Click <<Back to return to the previous step. Click Cancel and then click Done to cancel the wizard.