message: Delete unused 'on_device()' method of `DistributedValues`.
diff: @@ -75,10 +75,6 @@ class DistributedValues(object):
  ValueError("Device %s not found in %s (current device %s)" %
  (device, self._index.keys(), device_util.current())), e)
  - def on_device(self, device):
  - device = device_util.canonicalize(device)
  - return device in self._index
  -
  @property
  def devices(self):
  return list(self._index.keys())
  