docs: def del_repo_key(name=None, **kwargs):
      '''
      .. versionadded:: 2015.8.0
  
      Remove a repo key using ``apt-key del``
  
      name
          Repo from which to remove the key. Unnecessary if ``keyid`` is passed.
  
      keyid
          The KeyID of the GPG key to remove
  
      keyid_ppa : False
          If set to ``True``, the repo's GPG key ID will be looked up from
          ppa.launchpad.net and removed.
  
          .. note::
  
              Setting this option to ``True`` requires that the ``name`` param
              also be passed.
  
      CLI Examples:
  
      .. code-block:: bash
  
          salt '*' pkg.del_repo_key keyid=0123ABCD
          salt '*' pkg.del_repo_key name='ppa:foo/bar' keyid_ppa=True
      '''
      if kwargs.get('keyid_ppa', False):
          if isinstance(name, six.string_types) and name.startswith('ppa:'):
              owner_name, ppa_name = name[4:].split('/')
              ppa_info = _get_ppa_info_from_launchpad(
                  owner_name, ppa_name)
              keyid = ppa_info['signing_key_fingerprint'][-8:]
          else:
              raise SaltInvocationError(
                  'keyid_ppa requires that a PPA be passed'
              )
      else:
          if 'keyid' in kwargs:
              keyid = kwargs.get('keyid')
          else:
              raise SaltInvocationError(
                  'keyid or keyid_ppa and PPA name must be passed'
              )
  
      result = _call_apt(['apt-key', 'del', keyid], scope=False)
      if result['retcode'] != 0:
          msg = 'Failed to remove keyid {0}'
          if result['stderr']:
              msg += ': {0}'.format(result['stderr'])
          raise CommandExecutionError(msg)
      return keyid