Merge pull request 'Fix ConcurrentModificationException' (#112) from FixTracer into master

Reviewed-by: Lixfel <lixfel@steamwar.de>

BauSystem_Main/src/de/steamwar/bausystem/tracer/TNTTracer.java

@@ -40,26 +40,10 @@ public class TNTTracer {
     private static final TraceCache traceCache = new TraceCache();
 
     public static void init(){
-        Bukkit.getScheduler().runTaskTimer(BauSystem.getPlugin(), () -> {
-            synchronized (synchronizer) {
-                synchronizer.notifyAll();
-            }
-        }, 1, 20);
-        Bukkit.getScheduler().runTaskAsynchronously(BauSystem.getPlugin(), () -> {
-            while (true) {
-                synchronized (synchronizer) {
-                    try {
-                        synchronizer.wait();
-                    } catch (InterruptedException e) {
-                        Thread.currentThread().interrupt();
-                    }
-                }
-                run();
-            }
-        });
+        Bukkit.getScheduler().runTaskTimer(BauSystem.getPlugin(), TNTTracer::run, 0, 20);
     }
 
-    private static void run(){
+    private static void run() {
         for (Player p : Bukkit.getOnlinePlayers()) {
             if (DEBUG) {
                 String actionBar = "§e" + TraceManager.getAllTraces().size() + " §cTraces   §e" + ShowManager.get(p).getShowRadius() + " §cRadius";