message: Remove unnecessary condition on Identity nodes
diff: @@ -1577,7 +1577,7 @@ void AutoMixedPrecisionImpl::ForceColorMatchBetweenDataStructureOps(
  bool AutoMixedPrecisionImpl::IsIdentityAfterVariable(
  const NodeDef& node) const {
  - if (node.op() == "Identity" && node.input_size() == 1) {
  + if (node.op() == "Identity") {
  GraphView::InputPort node_input(&node, 0);
  MutableGraphView::OutputPort prev_output =
  graph_view_.GetRegularFanin(node_input);
  