Remove useless include (not needed now that libswscale uses libavutil)

Originally committed as revision 21728 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/swscale.c

@@ -61,11 +61,6 @@ untested special converters
 #include <unistd.h>
 #include "config.h"
 #include <assert.h>
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#else
-#include <stdlib.h>
-#endif
 #ifdef HAVE_SYS_MMAN_H
 #include <sys/mman.h>
 #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)