lavu: remove disabled FF_API_AV_FIFO_PEEK cruft

libavutil/fifo.h

@@ -128,15 +128,4 @@ static inline uint8_t *av_fifo_peek2(const AVFifoBuffer *f, int offs)
     return ptr;
 }
 
-#if FF_API_AV_FIFO_PEEK
-/**
- * @deprecated Use av_fifo_peek2() instead.
- */
-attribute_deprecated
-static inline uint8_t av_fifo_peek(AVFifoBuffer *f, int offs)
-{
-    return *av_fifo_peek2(f, offs);
-}
-#endif
-
 #endif /* AVUTIL_FIFO_H */

libavutil/version.h

@@ -61,9 +61,6 @@
  * @{
  */
 
-#ifndef FF_API_AV_FIFO_PEEK
-#define FF_API_AV_FIFO_PEEK             (LIBAVUTIL_VERSION_MAJOR < 52)
-#endif
 #ifndef FF_API_PIX_FMT
 #define FF_API_PIX_FMT                  (LIBAVUTIL_VERSION_MAJOR < 53)
 #endif