Don't cancel death message fixes for NPCs.

src/main/java/com/gmail/nossr50/listeners/PlayerListener.java

@@ -105,11 +105,6 @@ public class PlayerListener implements Listener {
         }
 
         Player player = event.getEntity();
-
-        if (Misc.isNPCEntity(player)) {
-            return;
-        }
-
         event.setDeathMessage(MobHealthbarUtils.fixDeathMessage(deathMessage, player));
     }