code: public void deleteAtManagementGroup(String policyDefinitionName, String managementGroupId) {
          deleteAtManagementGroupWithServiceResponseAsync(policyDefinitionName, managementGroupId).toBlocking().single().body();
      }
docs: Deletes a policy definition at management group level.
  
  @param policyDefinitionName The name of the policy definition to delete.
  @param managementGroupId The ID of the management group.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent