code: func resourceVSphereDatastoreClusterApplyDelete(d *schema.ResourceData, pod *object.StoragePod) error {
  	log.Printf("[DEBUG] %s: Proceeding with datastore cluster deletion", resourceVSphereDatastoreClusterIDString(d))
  	if err := storagepod.Delete(pod); err != nil {
  		return err
  	}
  	d.SetId("")
  	return nil
  }
docs: // resourceVSphereDatastoreClusterApplyDelete process the removal of a
  // datastore cluster.