Remove unnecessary methods.

src/itdelatrisu/opsu/objects/DummyObject.java

@@ -53,9 +53,6 @@ public class DummyObject implements HitObject {
 	@Override
 	public boolean mousePressed(int x, int y, int trackPosition) { return false; }
 
-	@Override
-	public OsuHitObject getHitObject() { return hitObject; }
-
 	@Override
 	public void updatePosition() {
 		this.x = hitObject.getScaledX();