lavf: remove disabled FF_API_LOOP_OUTPUT cruft

libavformat/avformat.h

@@ -876,17 +876,6 @@ typedef struct AVFormatContext {
 #endif
     int max_delay;
 
-#if FF_API_LOOP_OUTPUT
-#define AVFMT_NOOUTPUTLOOP -1
-#define AVFMT_INFINITEOUTPUTLOOP 0
-    /**
-     * number of times to loop output in formats that support it
-     *
-     * @deprecated use the 'loop' private option in the gif muxer.
-     */
-    attribute_deprecated int loop_output;
-#endif
-
     int flags;
 #define AVFMT_FLAG_GENPTS       0x0001 ///< Generate missing pts even if it requires parsing future frames.
 #define AVFMT_FLAG_IGNIDX       0x0002 ///< Ignore index.

libavformat/gif.c

@@ -288,11 +288,6 @@ static int gif_write_header(AVFormatContext *s)
         return AVERROR(EIO);
     }
 
-#if FF_API_LOOP_OUTPUT
-    if (s->loop_output)
-        gif->loop = s->loop_output;
-#endif
-
     gif_image_write_header(pb, width, height, gif->loop, NULL);
 
     avio_flush(s->pb);

libavformat/version.h

@@ -47,9 +47,6 @@
  * Those FF_API_* defines are not part of public API.
  * They may change, break or disappear at any time.
  */
-#ifndef FF_API_LOOP_OUTPUT
-#define FF_API_LOOP_OUTPUT             (LIBAVFORMAT_VERSION_MAJOR < 54)
-#endif
 #ifndef FF_API_TIMESTAMP
 #define FF_API_TIMESTAMP               (LIBAVFORMAT_VERSION_MAJOR < 54)
 #endif