mov: remove unused function

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

libavformat/mov.c

@@ -2698,15 +2698,6 @@ static int mov_read_elst(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     return 0;
 }
 
-static int mov_read_chan2(MOVContext *c, AVIOContext *pb, MOVAtom atom)
-{
-    if (atom.size < 16)
-        return 0;
-    avio_skip(pb, 4);
-    ff_mov_read_chan(c->fc, pb, c->fc->streams[0],  atom.size - 4);
-    return 0;
-}
-
 static int mov_read_tmcd(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 {
     MOVStreamContext *sc;