message: Remove unused method declarations in hog.cpp
  The class `App` appears to have two unused methods: `message` and `checkRectSimilarity`. The is no definition or use of either of these methods. This appears to be dead code.
diff: @@ -28,16 +28,6 @@ public:
  void workBegin();
  void workEnd();
  string workFps() const;
  - string message() const;
  -
  -
  -// This function test if gpu_rst matches cpu_rst.
  -// If the two vectors are not equal, it will return the difference in vector size
  -// Else if will return
  -// (total diff of each cpu and gpu rects covered pixels)/(total cpu rects covered pixels)
  - double checkRectSimilarity(Size sz,
  - std::vector<Rect>& cpu_rst,
  - std::vector<Rect>& gpu_rst);
  private:
  App operator=(App&);
  