message: Remove TODOD since Concat op now supports all types.
diff: @@ -52,8 +52,6 @@ TfLiteStatus Prepare(TfLiteContext* context, TfLiteNode* node) {
  TF_LITE_ENSURE(context, axis >= 0);
  TF_LITE_ENSURE(context, axis < t0->dims->size);
  - // TODO(ahentz): These are limitations of our implementation that could be
  - // removed with a bit of effort.
  TF_LITE_ENSURE_EQ(context, params->activation, kTfLiteActNone);
  TF_LITE_ENSURE(context,
  input_type == kTfLiteFloat32 || input_type == kTfLiteUInt8 ||
  