flxdemux: Remove unused but set keyframe variables

The FIXMEs about the keyframe flag never being used are left for later
fixing, at which point the keyframe variables could be added back.

gst/flv/gstflvdemux.c

@@ -2443,7 +2443,7 @@ flv_demux_handle_seek_push (GstFlvDemux * demux, GstEvent * event)
   GstSeekType start_type, stop_type;
   gint64 start, stop;
   gdouble rate;
-  gboolean update, flush, keyframe, ret;
+  gboolean update, flush, ret;
   GstSegment seeksegment;
 
   gst_event_parse_seek (event, &rate, &format, &flags,
@@ -2454,7 +2454,6 @@ flv_demux_handle_seek_push (GstFlvDemux * demux, GstEvent * event)
 
   flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
   /* FIXME : the keyframe flag is never used ! */
-  keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
 
   /* Work on a copy until we are sure the seek succeeded. */
   memcpy (&seeksegment, &demux->segment, sizeof (GstSegment));
@@ -2603,7 +2602,7 @@ gst_flv_demux_handle_seek_pull (GstFlvDemux * demux, GstEvent * event,
   GstSeekType start_type, stop_type;
   gint64 start, stop;
   gdouble rate;
-  gboolean update, flush, keyframe, ret = FALSE;
+  gboolean update, flush, ret = FALSE;
   GstSegment seeksegment;
 
   gst_event_parse_seek (event, &rate, &format, &flags,
@@ -2620,7 +2619,6 @@ gst_flv_demux_handle_seek_pull (GstFlvDemux * demux, GstEvent * event,
 
   flush = ! !(flags & GST_SEEK_FLAG_FLUSH);
   /* FIXME : the keyframe flag is never used */
-  keyframe = ! !(flags & GST_SEEK_FLAG_KEY_UNIT);
 
   if (flush) {
     /* Flush start up and downstream to make sure data flow and loops are