Hotfix flying in arena issue

Signed-off-by: Lixfel <agga-games@gmx.de>

FightSystem_Main/src/de/steamwar/fightsystem/listener/FreezeWorldStateListener.java

@@ -50,7 +50,7 @@ public class FreezeWorldStateListener extends BasicListener {
 
     @EventHandler
     public void handlePlayerKickEvent(PlayerKickEvent e){
-        if(e.getReason().equals("Flying is not enabled on this server!"))
+        if(e.getReason().contains("Flying is not enabled"))
             e.setCancelled(true);
     }