lavf: remove FF_API_INDEX_BUILT cruft

libavformat/avformat.h

@@ -696,9 +696,6 @@ typedef struct AVFormatContext {
 
     /* av_seek_frame() support */
     int64_t data_offset; /**< offset of the first packet */
-#if FF_API_INDEX_BUILT
-    attribute_deprecated int index_built;
-#endif
 
     int mux_rate;
     unsigned int packet_size;

libavformat/version.h

@@ -50,9 +50,6 @@
 #ifndef FF_API_OLD_AVIO
 #define FF_API_OLD_AVIO                (LIBAVFORMAT_VERSION_MAJOR < 54)
 #endif
-#ifndef FF_API_INDEX_BUILT
-#define FF_API_INDEX_BUILT             (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
 #ifndef FF_API_DUMP_FORMAT
 #define FF_API_DUMP_FORMAT             (LIBAVFORMAT_VERSION_MAJOR < 54)
 #endif