Delete useless included header files

Author: nynyg

modules/photometric_calib/include/opencv2/photometric_calib.hpp

@@ -9,9 +9,6 @@
 #include "opencv2/imgproc.hpp"
 
 #include <vector>
-#include <string>
-#include <iostream>
-#include <fstream>
 
 /** @defgroup photometric_calib Photometric Calibration
 */

modules/photometric_calib/include/opencv2/photometric_calib/Reader.hpp

@@ -7,6 +7,9 @@
 
 #include "opencv2/photometric_calib.hpp"
 
+#include <vector>
+#include <string>
+
 namespace cv { namespace photometric_calib{
 
 //! @addtogroup photometric_calib

modules/photometric_calib/src/photometric_calib.cpp

@@ -4,6 +4,7 @@
 
 #include "precomp.hpp"
 #include "opencv2/photometric_calib.hpp"
+#include <iostream>
 
 namespace cv{ namespace photometric_calib{