removed QNX support.

src/file/SDL_rwops.c

@@ -19,14 +19,10 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 
-/* We won't get fseeko64 on QNX if _LARGEFILE64_SOURCE is defined, but the
-   configure script knows the C runtime has it and enables it. */
-#ifndef __QNXNTO__
 /* Need this so Linux systems define fseek64o, ftell64o and off64_t */
 #ifndef _LARGEFILE64_SOURCE
 #define _LARGEFILE64_SOURCE
 #endif
-#endif
 
 #include "../SDL_internal.h"
 
@@ -37,7 +33,6 @@
 #ifdef HAVE_STDIO_H
 #include <stdio.h>
 #endif
-
 #ifdef HAVE_LIMITS_H
 #include <limits.h>
 #endif