message: Remvoe TODO since GetOptionalInput is deprecated in favor of GetInput now
diff: @@ -98,9 +98,6 @@ TfLiteStatus Prepare(TfLiteContext* context, TfLiteNode* node) {
  reinterpret_cast<TfLiteDepthwiseConvParams*>(node->builtin_data);
  OpData* data = reinterpret_cast<OpData*>(node->user_data);
  - // TODO(ahentz): use could use GetOptionalInputTensor() here, but we need to
  - // decide whether we are OK with optional tensors being completely absent, as
  - // opposed to having -1 as their index.
  bool hasBias = NumInputs(node) == 3;
  TF_LITE_ENSURE(context, hasBias || NumInputs(node) == 2);
  