Removed inclusion of <sys/types.h> and <sys/stat.h> in .c-files

since they're already included through "setup.h".

lib/formdata.c

@@ -112,9 +112,6 @@ Content-Disposition: form-data; name="FILECONTENT"
 #include <string.h>
 #include <stdarg.h>
 #include <time.h>
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
 #if defined(HAVE_LIBGEN_H) && defined(HAVE_BASENAME)
 #include <libgen.h>
 #endif