message: DNN: Remove unused code in onnx_importer.cpp
diff: @@ -85,7 +85,6 @@ class ONNXImporter
  void expandMid(const std::string& prefix, opencv_onnx::NodeProto& node_proto,
  const std::string& input, size_t n);
  - void addNegation(const LayerParams& layerParams, opencv_onnx::NodeProto& node_proto, int input_id);
  void lstm_extractConsts(LayerParams& layerParams, const opencv_onnx::NodeProto& lstm_proto, size_t idx, int* blobShape_, int size);
  void lstm_add_reshape(const std::string& input_name, const std::string& output_name, int* layerShape, size_t n);
  std::string lstm_add_slice(int index, const std::string& input_name, int* begin, int* end, size_t n);
  @@ -671,32 +670,6 @@ void ONNXImporter::expandMid(const std::string& prefix, opencv_onnx::NodeProto&
  }
  }
  -/** @brief Multiply one of node_proto inputs by -1
  - * @param layerParams parameters of the node
  - * @param node_proto node which input will be replaced
  - * @param input_id id of input to be multiplied by -1
  - */
  -void ONNXImporter::addNegation(const LayerParams& layerParams, opencv_onnx::NodeProto& node_proto, int input_id)
  -{
  - LayerParams powerParams;
  - powerParams.name = layerParams.name + "/neg";
  - powerParams.type = "Power";
  - powerParams.set("scale", -1.f);
  -
  - //Create Power layer
  - int id = dstNet.addLayer(powerParams.name, powerParams.type, powerParams);
  - //Connect to input
  - IterLayerId_t layerId = layer_id.find(node_proto.input(input_id));
  - CV_Assert(layerId != layer_id.end());
  - dstNet.connect(layerId->second.layerId, layerId->second.outputId, id, 0);
  - //Add shape
  - layer_id.insert(std::make_pair(powerParams.name, LayerInfo(id, 0)));
  - outShapes[powerParams.name] = outShapes[node_proto.input(input_id)];
  -
  - //Replace input to Power
  - node_proto.set_input(input_id, powerParams.name);
  -}
  -
  void ONNXImporter::addConstant(const std::string& name, const Mat& blob)
  {
  CV_LOG_DEBUG(NULL, "DNN/ONNX: add constant '" << name << "' shape=" << toString(shape(blob)) << ": " << toString(blob));
  