Fix HotbarKit

Fix steamwar.devserver.gradle
Add WarGear20 to build.gradle.kts

FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/fight/HotbarKit.java

@@ -37,6 +37,7 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.Action;
 import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.inventory.InventoryOpenEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.inventory.EquipmentSlot;
 import org.bukkit.inventory.ItemStack;
@@ -120,9 +121,6 @@ public class HotbarKit extends Kit {
 
             Player player = (Player) event.getWhoClicked();
             click(player, slot, event);
-            Bukkit.getScheduler().runTaskLater(FightSystem.getPlugin(), () -> {
-                player.setItemOnCursor(null);
-            }, 1);
         }
 
         private void click(Player player, int slot, Cancellable event) {