Delete a training event and its associated NGC user group

Deletes a training event. This will also delete the NGC external user group (EUG). Since only the creator of the EUG may delete it, only the instructor of the training may delete the training.

Required roles (all): air_instructor, air_org_admin, user_admin

Additional permissions:

• Only the instructor who created this training may perform this action.
• The client must have the NCA ‘Administrator’ role set in the NCA account associated with the NGC Organization.