demux: ogg: remove bogus optimization

We can't assume page are small.
and seeks to wrong/outside of stream pos if
stream does not start time 0

modules/demux/oggseek.c

@@ -790,15 +790,7 @@ int Oggseek_BlindSeektoAbsoluteTime( demux_t *p_demux, logical_stream_t *p_strea
         b_found = true;
     }
 
-    /* Or try to be smart with audio fixed bitrate streams */
-    if ( !b_found && p_stream->fmt.i_cat == AUDIO_ES && p_sys->i_streams == 1
-         && p_sys->i_bitrate && Ogg_GetKeyframeGranule( p_stream, 0xFF00FF00 ) == 0xFF00FF00 )
-    {
-        /* But only if there's no keyframe/preload requirements */
-        /* FIXME: add function to get preload time by codec, ex: opus */
-        i_lowerpos = VLC_TICK_0 + (i_time - VLC_TICK_0) * p_sys->i_bitrate / (CLOCK_FREQ * 8);
-        b_found = true;
-    }
+    /* FIXME: add function to get preload time by codec, ex: opus */
 
     /* or search */
     if ( !b_found && b_fastseek )