Is is possible to delete/remove an abstract role (Digital Assistant - Employee role) ?

We are trying to delete Digital Assistant - Employee role from the Security Console. It's not seeded role available readily in Security Console.

We need to import the Digital Assistant roles. Please refer the Oracle doc that states how we can upload/import the Digital Assistant roles:

We have imported these Digital Assistant roles in HCM. I just want to know if there is way we can delete these roles