Remove unnecessary header files.
Originally committed as revision 9662 to svn://svn.ffmpeg.org/ffmpeg/trunk
#include <stdio.h>
#include <stddef.h>
#include <math.h>
-#include <inttypes.h>
#include <string.h>
#define ALT_BITSTREAM_READER
#include "ac3tab.h"
-#include "ac3.h"
#include "ac3_decoder.h"
#include "avcodec.h"
#include "bitstream.h"
#include "dsputil.h"
#include "avutil.h"
#include "common.h"
-#include "math.h"
-#include "crc.h"
#define N 512 /* constant for IMDCT Block size */