lavf: replace av_new_stream->avformat_new_stream part II.

Manual replacements are done in this commit.

In many cases, the id is some constant made up number (e.g. 0 for video
and 1 for audio), which is then not used in the demuxer for anything.
Those ids are removed.

libavformat/jvdec.c

@@ -70,7 +70,7 @@ static int read_header(AVFormatContext *s,
     avio_skip(pb, 80);
 
     ast = avformat_new_stream(s, NULL);
-    vst = av_new_stream(s, 1);
+    vst = avformat_new_stream(s, NULL);
     if (!ast || !vst)
         return AVERROR(ENOMEM);