message: Use std::move instead of Swap for literal
diff: @@ -79,7 +79,7 @@ Status PoplarTransferManager::TransferLiteralFromDevice(
  executor, source, ShapeUtil::ByteSizeOf(device_shape),
  literal->MutableInternalData()));
  if (!ShapeUtil::Equal(literal_shape, device_shape)) {
  - literal->Swap(literal->Relayout(literal_shape.layout()).get());
  + *literal = std::move(*literal->Relayout(literal_shape.layout()));
  }
  TF_RET_CHECK(ShapeUtil::Equal(literal_shape, literal->shape()));
  return Status::OK();
  