refactor: zap display_center stub implementations

src/album.rs

@@ -176,10 +176,6 @@ impl ListItem for Album {
         format!("{}", self)
     }
 
-    fn display_center(&self, _library: Arc<Library>) -> String {
-        "".to_string()
-    }
-
     fn display_right(&self, library: Arc<Library>) -> String {
         let saved = if library.is_saved_album(self) {
             if library.cfg.values().use_nerdfont.unwrap_or(false) {

src/artist.rs

@@ -148,10 +148,6 @@ impl ListItem for Artist {
         format!("{}", self)
     }
 
-    fn display_center(&self, _library: Arc<Library>) -> String {
-        "".to_string()
-    }
-
     fn display_right(&self, library: Arc<Library>) -> String {
         let followed = if library.is_followed_artist(self) {
             if library.cfg.values().use_nerdfont.unwrap_or(false) {

src/episode.rs

@@ -71,10 +71,6 @@ impl ListItem for Episode {
         self.name.clone()
     }
 
-    fn display_center(&self, _library: Arc<Library>) -> String {
-        "".to_string()
-    }
-
     fn display_right(&self, _library: Arc<Library>) -> String {
         format!("{} [{}]", self.duration_str(), self.release_date)
     }

src/playlist.rs

@@ -128,10 +128,6 @@ impl ListItem for Playlist {
         self.name.clone()
     }
 
-    fn display_center(&self, _library: Arc<Library>) -> String {
-        "".to_string()
-    }
-
     fn display_right(&self, library: Arc<Library>) -> String {
         let saved = if library.is_saved_playlist(self) {
             if library.cfg.values().use_nerdfont.unwrap_or(false) {

src/show.rs

@@ -92,10 +92,6 @@ impl ListItem for Show {
         format!("{}", self)
     }
 
-    fn display_center(&self, _library: Arc<Library>) -> String {
-        "".to_string()
-    }
-
     fn display_right(&self, library: Arc<Library>) -> String {
         let saved = if library.is_saved_show(self) {
             if library.cfg.values().use_nerdfont.unwrap_or(false) {

src/traits.rs

@@ -15,7 +15,9 @@ use crate::track::Track;
 pub trait ListItem: Sync + Send + 'static {
     fn is_playing(&self, queue: Arc<Queue>) -> bool;
     fn display_left(&self) -> String;
-    fn display_center(&self, library: Arc<Library>) -> String;
+    fn display_center(&self, _library: Arc<Library>) -> String {
+        "".to_string()
+    }
     fn display_right(&self, library: Arc<Library>) -> String;
     fn play(&mut self, queue: Arc<Queue>);
     fn queue(&mut self, queue: Arc<Queue>);