Fix system trying to gather non-existent data to display message

src/main/java/eu/ruekov/ruakij/LinkedBeaconTeleporters/linkedBeaconTeleporter/LinkedBeaconTeleporterBlock.java

@@ -32,7 +32,7 @@ public class LinkedBeaconTeleporterBlock extends LinkedBeaconTeleporter {
         e.setExpToDrop(0);
 
         // Notify Player when link was destroyed
-        if(this.linkedBeaconTeleporters.size()-1 != 2){
+        if(this.linkedBeaconTeleporters.size() == 2){
             e.getPlayer().sendMessage("§cConnection to Teleporter with id §7"+ this.teleporterId +" §e("+
                     (int)((LinkedBeaconTeleporterBlock)this.linkedBeaconTeleporters.get(0)).block.getLocation().distance(
                             ((LinkedBeaconTeleporterBlock)this.linkedBeaconTeleporters.get(1)).block().getLocation()