def delete_at_management_group(policy_set_definition_name, management_group_id, custom_headers:nil)
      response = delete_at_management_group_async(policy_set_definition_name, management_group_id, custom_headers:custom_headers).value!
      nil
    end
def delete_at_management_group(policy_set_definition_name, management_group_id, custom_headers:nil)
      response = delete_at_management_group_async(policy_set_definition_name, management_group_id, custom_headers:custom_headers).value!
      nil
    end
Deletes a policy set definition at management group level.

 @param policy_set_definition_name [String] The name of the policy set
 definition to delete.
 @param management_group_id [String] The ID of the management group.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.