avfilter/formats: Remove avfilter_make_format64_list()

The API it is part of has been made private long ago (see commit
b74a1da49d).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

libavfilter/formats.c

@@ -304,13 +304,6 @@ AVFilterChannelLayouts *ff_make_format64_list(const int64_t *fmts)
     return formats;
 }
 
-#if LIBAVFILTER_VERSION_MAJOR < 8
-AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts)
-{
-    return ff_make_format64_list(fmts);
-}
-#endif
-
 #define ADD_FORMAT(f, fmt, unref_fn, type, list, nb)        \
 do {                                                        \
     type *fmts;                                             \

libavfilter/formats.h

@@ -157,10 +157,6 @@ AVFilterChannelLayouts *ff_all_channel_counts(void);
 av_warn_unused_result
 AVFilterChannelLayouts *ff_make_format64_list(const int64_t *fmts);
 
-#if LIBAVFILTER_VERSION_MAJOR < 8
-AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts);
-#endif
-
 /**
  * A helper for query_formats() which sets all links to the same list of channel
  * layouts/sample rates. If there are no links hooked to this filter, the list