Remove unnecessary code

src/app/components/details/details_model.rs

@@ -260,38 +260,6 @@ impl PlaylistModel for DetailsModel {
  menu.append(Some(&*labels::ADD_TO_QUEUE), Some("song.queue"));
  Some(menu.upcast())
  }
-
- fn autoscroll_to_playing(&self) -> bool {
- true
- }
-
- fn is_selection_enabled(&self) -> bool {
- self.selection()
- .map(|s| s.is_selection_enabled())
- .unwrap_or(false)
- }
-
- fn song_state(&self, id: &str) -> SongState {
- let is_playing = self.current_song_id().map(|s| s.eq(id)).unwrap_or(false);
- let is_selected = self
- .selection()
- .map(|s| s.is_song_selected(id))
- .unwrap_or(false);
- SongState {
- is_selected,
- is_playing,
- }
- }
-
- fn toggle_select(&self, id: &str) {
- if let Some(selection) = self.selection() {
- if selection.is_song_selected(id) {
- self.deselect_song(id)
- } else {
- self.select_song(id);
- }
- }
- }
 }
 
 impl SimpleHeaderBarModel for DetailsModel {