avcodec/h264_*: Remove unnecessary internal.h inclusions

Also remove some other unnecessary headers while at it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/h264_cabac.c

@@ -34,7 +34,6 @@
 #include "config.h"
 #include "cabac.h"
 #include "cabac_functions.h"
-#include "internal.h"
 #include "h264dec.h"
 #include "h264data.h"
 #include "h264_mvpred.h"

libavcodec/h264_cavlc.c

@@ -28,7 +28,6 @@
 #define CABAC(h) 0
 #define UNCHECKED_BITSTREAM_READER 1
 
-#include "internal.h"
 #include "h264dec.h"
 #include "h264_mvpred.h"
 #include "h264data.h"

libavcodec/h264_direct.c

@@ -25,7 +25,6 @@
  * @author Michael Niedermayer <michaelni@gmx.at>
  */
 
-#include "internal.h"
 #include "avcodec.h"
 #include "h264dec.h"
 #include "h264_ps.h"

libavcodec/h264_loopfilter.c

@@ -28,13 +28,10 @@
 #include "libavutil/internal.h"
 #include "libavutil/intreadwrite.h"
 #include "libavutil/mem_internal.h"
-#include "internal.h"
 #include "avcodec.h"
 #include "h264dec.h"
 #include "h264_ps.h"
-#include "mathops.h"
 #include "mpegutils.h"
-#include "rectangle.h"
 
 /* Deblocking filter (p153) */
 static const uint8_t alpha_table[52*3] = {

libavcodec/h264_mvpred.h

@@ -28,8 +28,6 @@
 #ifndef AVCODEC_H264_MVPRED_H
 #define AVCODEC_H264_MVPRED_H
 
-#include "internal.h"
-#include "avcodec.h"
 #include "h264dec.h"
 #include "mpegutils.h"
 #include "libavutil/avassert.h"