Remove redundant TODO comment in CombatPhase.java

The comment about adding players to the boss bar list was removed as it is completed.

src/main/java/com/alttd/ctf/game/phases/CombatPhase.java

@@ -25,7 +25,6 @@ public class CombatPhase implements GamePhaseExecutor {
             executorService = Executors.newSingleThreadScheduledExecutor();
         }
         executorService.scheduleAtFixedRate(flag, 0, 1, TimeUnit.SECONDS);
-        // TODO Add players to bossbar list for capture progress(or maybe only when any progress is made)
     }
 
     @Override