remove useless assignment

modules/access/live555.cpp

@@ -953,9 +953,7 @@ static int SessionsSetup( demux_t *p_demux )
                 else if( !strcmp( sub->codecName(), "SPEEX" ) )
                 {
                     tk->fmt.i_codec = VLC_FOURCC( 's', 'p', 'x', 'r' );
-                    if ( sub->rtpTimestampFrequency() )
-                        tk->fmt.audio.i_rate = sub->rtpTimestampFrequency();
-                    else
+                    if ( tk->fmt.audio.i_rate == 0 )
                     {
                         msg_Warn( p_demux,"Using 8kHz as default sample rate." );
                         tk->fmt.audio.i_rate = 8000;