lavfi/buffer: remove unused function av_vsrc_buffer_add_frame_alt()

libavfilter/buffersrc.c

@@ -112,25 +112,6 @@ static AVFilterBufferRef *copy_buffer_ref(AVFilterContext *ctx,
     return buf;
 }
 
-#if FF_API_VSRC_BUFFER_ADD_FRAME
-static int av_vsrc_buffer_add_frame_alt(AVFilterContext *buffer_filter, AVFrame *frame,
-                             int64_t pts, AVRational pixel_aspect)
-{
-    int64_t orig_pts = frame->pts;
-    AVRational orig_sar = frame->sample_aspect_ratio;
-    int ret;
-
-    frame->pts = pts;
-    frame->sample_aspect_ratio = pixel_aspect;
-    if ((ret = av_buffersrc_write_frame(buffer_filter, frame)) < 0)
-        return ret;
-    frame->pts = orig_pts;
-    frame->sample_aspect_ratio = orig_sar;
-
-    return 0;
-}
-#endif
-
 int av_buffersrc_add_frame(AVFilterContext *buffer_src,
                            const AVFrame *frame, int flags)
 {