Fix TablistManager

src/de/steamwar/bungeecore/listeners/TablistManager.java

@@ -72,7 +72,7 @@ public class TablistManager extends BasicListener {
     private void calculateSize() {
         size = -1;
         size += playerMap.size() * 2 + ProxyServer.getInstance().getPlayers().size();
-        size = (size + 19) / 20 + 1;
+        size = (size + 19) / 20;
         if(size > 5) size = 5;
     }