code: def delete_container_metadata(self, container, prefix=None):
          
          return self._manager.delete_metadata(container, prefix=prefix)
docs: Removes all of thethe container's metadata.
  
          By default, all metadata beginning with the standard container metadata
          prefix ('X-Container-Meta-') is removed. If you wish to remove all
          metadata beginning with a different prefix, you must specify that
          prefix.