Fixing

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

@@ -19,7 +19,6 @@
 
 package de.steamwar.fightsystem.listener;
 
-import de.steamwar.core.Core;
 import de.steamwar.fightsystem.Config;
 import de.steamwar.fightsystem.FightSystem;
 import de.steamwar.fightsystem.states.FightState;
@@ -51,7 +50,9 @@ public class ArrowStopper extends BasicListener {
     }
 
     private void run() {
-        for (Map.Entry<Entity, Location> e : LAST_LOCATION.entrySet()) {
+        Iterator<Map.Entry<Entity, Location>> iterator = LAST_LOCATION.entrySet().iterator();
+        while (iterator.hasNext()) {
+            Map.Entry<Entity, Location> e = iterator.next();
             Entity entity = e.getKey();
             if(checkBlocks(entity.getLocation().getBlock(), e.getValue().getBlock())){
                 entity.remove();