track: remove unused fields

crates/app/src/model/track.rs

@@ -2,19 +2,15 @@ use crate::*;
 
 #[derive(Debug, Default)] pub struct Track {
     /// Name of track
-    pub name:       Arc<str>,
-    /// Preferred width of track column
-    pub width:      usize,
+    pub name:      Arc<str>,
     /// Identifying color of track
-    pub color:      ItemTheme,
+    pub color:     ItemTheme,
+    /// Preferred width of track column
+    pub width:     usize,
     /// MIDI sequencer state
-    pub sequencer:  Sequencer,
+    pub sequencer: Sequencer,
     /// Device chain
-    pub devices:    Vec<Device>,
-    /// Inputs of 1st device
-    pub audio_ins:  Vec<JackAudioIn>,
-    /// Outputs of last device
-    pub audio_outs: Vec<JackAudioOut>,
+    pub devices:   Vec<Device>,
 }
 
 has_clock!(|self: Track|self.sequencer.clock);