Remove unneeded #include

Originally committed as revision 26272 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/dsputil.c

@@ -40,7 +40,6 @@
 #include "ac3dec.h"
 #include "vorbis.h"
 #include "png.h"
-#include "vp8dsp.h"
 
 uint8_t ff_cropTbl[256 + 2 * MAX_NEG_CROP] = {0, };
 uint32_t ff_squareTbl[512] = {0, };