Remove unnecessary barrier in runHaarClassifier().
Remove unnecessary barrier in runHaarClassifier().

Signed-off-by: Yan Wang <8ca54580088a7ffe1dd243d1c16c6d1f04463d55@linux.intel.com>

opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv