Update SimulatorBauGuiItem Permission

BauSystem_Main/src/de/steamwar/bausystem/features/simulator/SimulatorBauGuiItem.java

@@ -55,6 +55,6 @@ public class SimulatorBauGuiItem extends BauGuiItem {
 
     @Override
     public Permission permission() {
-        return Permission.WORLD;
+        return Permission.BUILD;
     }
 }