Update CC

src/de/steamwar/sql/Referee.java

@@ -44,8 +44,6 @@ public class Referee {
         delete.update(eventID, userID);
     }
 
-    private static final SelectStatement<Referee> byEvent = table.selectFields("eventID");
-
     public static Set<Integer> get(int eventID) {
         return byEvent.listSelect(eventID).stream().map(referee -> referee.userID).collect(Collectors.toSet());
     }