avcodec/vc1: Remove unused hrd fields

Unused since be3492ec7e.

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

libavcodec/vc1.c

@@ -1699,8 +1699,6 @@ av_cold void ff_vc1_init_common(VC1Context *v)
 {
     static AVOnce init_static_once = AV_ONCE_INIT;
 
-    v->hrd_rate = v->hrd_buffer = NULL;
-
     /* defaults */
     v->pq      = -1;
     v->mvrange = 0; /* 7.1.1.18, p80 */

libavcodec/vc1.h

@@ -322,8 +322,6 @@ typedef struct VC1Context{
     uint8_t* over_flags_plane;   ///< Overflags bitplane
     int overflg_is_raw;
     uint8_t condover;
-    uint16_t *hrd_rate, *hrd_buffer;
-    uint8_t *hrd_fullness;
     uint8_t range_mapy_flag;
     uint8_t range_mapuv_flag;
     uint8_t range_mapy;

libavcodec/vc1dec.c

@@ -593,8 +593,6 @@ av_cold int ff_vc1_decode_end(AVCodecContext *avctx)
 
     for (i = 0; i < 4; i++)
         av_freep(&v->sr_rows[i >> 1][i & 1]);
-    av_freep(&v->hrd_rate);
-    av_freep(&v->hrd_buffer);
     ff_mpv_common_end(&v->s);
     av_freep(&v->mv_type_mb_plane);
     av_freep(&v->direct_mb_plane);