avfilter/formats: Remove unused functions

This commit removes ff_parse_sample_format(), ff_parse_time_base() and
ff_query_formats_all_layouts() from libavfilter/formats.c. All of these
functions were completely unused. ff_parse_time_base() has not been used
at all since it had been added in 3448404a707b6e236a2ffa7b0453b3300de41b7b;
the last caller of ff_parse_sample_format has been removed in commit
d1c49bcae9b7fd41df5c6804ac7f6a5c271a7c2e. And the one and only caller of
ff_query_formats_all_layouts() (the asyncts filter) has been removed in
commit a8fe8d6b4a35c95aa94fccde5f001041278d197c.

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

1 files changed, 0 insertions, 22 deletions

diff --git a/libavfilter/internal.h b/libavfilter/internal.h
index cc208f8e3a..183215d152 100644
--- a/libavfilter/internal.h
+++ b/libavfilter/internal.h
@@ -172,28 +172,6 @@ av_warn_unused_result
 int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx);
 
 /**
- * Parse a time base.
- *
- * @param ret unsigned AVRational pointer to where the value should be written
- * @param arg string to parse
- * @param log_ctx log context
- * @return >= 0 in case of success, a negative AVERROR code on error
- */
-av_warn_unused_result
-int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx);
-
-/**
- * Parse a sample format name or a corresponding integer representation.
- *
- * @param ret integer pointer to where the value should be written
- * @param arg string to parse
- * @param log_ctx log context
- * @return >= 0 in case of success, a negative AVERROR code on error
- */
-av_warn_unused_result
-int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx);
-
-/**
  * Parse a channel layout or a corresponding integer representation.
  *
  * @param ret 64bit integer pointer to where the value should be written.