def delete_all_metadata(self):
j, r = self.datacenter.request('<STR_LIT>', self.path + '<STR_LIT>')<EOL>r.raise_for_status()<EOL>return self.get_metadata()<EOL>
::

    DELETE /:login/machines/:id/metadata

:Returns: current metadata
:rtype: empty :py:class:`dict`

Deletes all the metadata stored for this machine. Also explicitly 
requests and returns the machine metadata so that the local copy stays 
synchronized.