Remove a few obsolete header includes (fixes a compile error on solaris)

Originally committed as revision 2745 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

postproc/yuv2rgb_mlib.c

@@ -22,13 +22,6 @@
  *
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "config.h"
-#include "video_out.h"
-#include "yuv2rgb.h"
-
 #include <mlib_types.h>
 #include <mlib_status.h>
 #include <mlib_sys.h>