fixed package dir for PollTest and removed more overrides

Author: sixtyeight

src/test/java/artnet4j/PollTest.java renamed to src/test/java/artnet4j/test/PollTest.java

@@ -38,31 +38,27 @@ public static void main(String[] args) {
 
     private int sequenceID;
 
-    @Override
     public void discoveredNewNode(ArtNetNode node) {
         if (netLynx == null) {
             netLynx = node;
             System.out.println("found net lynx");
         }
     }
 
-    @Override
     public void discoveredNodeDisconnected(ArtNetNode node) {
         System.out.println("node disconnected: " + node);
         if (node == netLynx) {
             netLynx = null;
         }
     }
 
-    @Override
     public void discoveryCompleted(List<ArtNetNode> nodes) {
         System.out.println(nodes.size() + " nodes found:");
         for (ArtNetNode n : nodes) {
             System.out.println(n);
         }
     }
 
-    @Override
     public void discoveryFailed(Throwable t) {
         System.out.println("discovery failed");
     }