lavc: remove disabled FF_API_THREAD_INIT cruft.

libavcodec/avcodec.h

@@ -3726,14 +3726,6 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
 
 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt);
 
-#if FF_API_THREAD_INIT
-/**
- * @deprecated Set s->thread_count before calling avcodec_open2() instead of calling this.
- */
-attribute_deprecated
-int avcodec_thread_init(AVCodecContext *s, int thread_count);
-#endif
-
 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size);
 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int, int),void *arg, int *ret, int count);
 //FIXME func typedef

libavcodec/utils.c

@@ -1810,14 +1810,6 @@ void ff_thread_await_progress(AVFrame *f, int progress, int field)
 
 #endif
 
-#if FF_API_THREAD_INIT
-int avcodec_thread_init(AVCodecContext *s, int thread_count)
-{
-    s->thread_count = thread_count;
-    return ff_thread_init(s);
-}
-#endif
-
 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
 {
     if (codec_id <= CODEC_ID_NONE)

libavcodec/version.h

@@ -41,9 +41,6 @@
 #ifndef FF_API_REQUEST_CHANNELS
 #define FF_API_REQUEST_CHANNELS (LIBAVCODEC_VERSION_MAJOR < 55)
 #endif
-#ifndef FF_API_THREAD_INIT
-#define FF_API_THREAD_INIT      (LIBAVCODEC_VERSION_MAJOR < 54)
-#endif
 #ifndef FF_API_OLD_FF_PICT_TYPES
 #define FF_API_OLD_FF_PICT_TYPES (LIBAVCODEC_VERSION_MAJOR < 54)
 #endif