Drop the deprecated parse_image_size() and parse_frame_rate() functions

at the next libavformat major version bump.

Originally committed as revision 16420 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/utils.c

@@ -2849,6 +2849,7 @@ void dump_format(AVFormatContext *ic,
         dump_stream_format(ic, i, index, is_output);
 }
 
+#if LIBAVFORMAT_VERSION_MAJOR < 53
 int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
 {
     return av_parse_video_frame_size(width_ptr, height_ptr, str);
@@ -2862,6 +2863,7 @@ int parse_frame_rate(int *frame_rate_num, int *frame_rate_den, const char *arg)
     *frame_rate_den= frame_rate.den;
     return ret;
 }
+#endif
 
 int64_t av_gettime(void)
 {