Remove or fix stale todos (#3990)

The software equivalent of dusting

Release Notes:

-

crates/theme/src/styles/colors.rs

@@ -223,6 +223,7 @@ pub struct ThemeStyles {
 
     #[refineable]
     pub status: StatusColors,
+
     pub player: PlayerColors,
     pub syntax: Arc<SyntaxTheme>,
 }

crates/theme/src/styles/players.rs

@@ -122,12 +122,10 @@ impl PlayerColors {
 
 impl PlayerColors {
     pub fn local(&self) -> PlayerColor {
-        // todo!("use a valid color");
         *self.0.first().unwrap()
     }
 
     pub fn absent(&self) -> PlayerColor {
-        // todo!("use a valid color");
         *self.0.last().unwrap()
     }