LAVF API: remove AVOutputFormat.set_parameters() the field is unused.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/avformat.h

@@ -285,10 +285,9 @@ typedef struct AVOutputFormat {
      * AVFMT_NODIMENSIONS, AVFMT_NOSTREAMS
      */
     int flags;
-    /**
-     * Currently only used to set pixel format if not YUV420P.
-     */
-    int (*set_parameters)(struct AVFormatContext *, AVFormatParameters *);
+
+    void *dummy;
+
     int (*interleave_packet)(struct AVFormatContext *, AVPacket *out,
                              AVPacket *in, int flush);
 

libavformat/utils.c

@@ -2716,11 +2716,6 @@ int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
     } else
         s->priv_data = NULL;
 
-    if (s->oformat->set_parameters) {
-        ret = s->oformat->set_parameters(s, ap);
-        if (ret < 0)
-            return ret;
-    }
     return 0;
 }