removed C API in the following modules: photo, video, imgcodecs, videoio (#13060)

* removed C API in the following modules: photo, video, imgcodecs, videoio

* trying to fix various compile errors and warnings on Windows and Linux

* continue to fix compile errors and warnings

* continue to fix compile errors, warnings, as well as the test failures

* trying to resolve compile warnings on Android

* Update cap_dc1394_v2.cpp

fix warning from the new GCC

modules/highgui/include/opencv2/highgui/highgui_c.h

@@ -44,12 +44,6 @@
 
 #include "opencv2/core/core_c.h"
 #include "opencv2/imgproc/imgproc_c.h"
-#ifdef HAVE_OPENCV_IMGCODECS
-#include "opencv2/imgcodecs/imgcodecs_c.h"
-#endif
-#ifdef HAVE_OPENCV_VIDEOIO
-#include "opencv2/videoio/videoio_c.h"
-#endif
 
 #ifdef __cplusplus
 extern "C" {