Boats and map are now updated using the observer pattern.

#implement

src/main/java/seng302/App.java

@@ -7,7 +7,6 @@ import javafx.scene.Scene;
 import javafx.scene.image.Image;
 import javafx.stage.Stage;
 import seng302.model.PolarTable;
-import seng302.model.stream.StreamReceiver;
 
 public class App extends Application {
 
@@ -28,7 +27,6 @@ public class App extends Application {
         primaryStage.show();
         primaryStage.setOnCloseRequest(e -> {
 //            ClientPacketParser.appClose();
-            StreamReceiver.noMoreBytes();
 //            ClientPacketParser.appClose();
             System.exit(0);
         });