vp9_raw_reorder_bsf: Remove a redundant allocation

This was left over from an earlier version which created the new
packet inside the current frame structure.  Now it just leaks an
unused packet, so remove the allocation entirely.

libavcodec/vp9_raw_reorder_bsf.c

@@ -241,10 +241,6 @@ static int vp9_raw_reorder_make_output(AVBSFContext *bsf,
                "(%"PRId64") from slot %d.\n",
                frame->sequence, frame->pts, s);
 
-        frame->packet = av_packet_alloc();
-        if (!frame->packet)
-            return AVERROR(ENOMEM);
-
         err = av_new_packet(out, 2);
         if (err < 0)
             return err;