message: Removed unused and undefined ShapeInference::GetDimension
diff: @@ -656,8 +656,6 @@ class InferenceContext {
  void PostInputInit(std::vector<std::unique_ptr<std::vector<ShapeAndType>>>
  input_handle_data);
  - DimensionHandle GetDimension(const DimensionOrConstant& d);
  -
  Status ReturnUnknownShape(ShapeHandle* out) {
  *out = UnknownShape();
  return Status::OK();
  