Remove callback parameters on states.

Assets/Cryville/Crtr/Event/EventBatcher.cs

@@ -56,7 +56,7 @@ namespace Cryville.Crtr.Event {
 			}
 		}
 		
-		public override void ForwardOnceToTime(double toTime, Action<ChartEvent> callback) {
+		public override void ForwardOnceToTime(double toTime) {
 			double toBeat = Math.Round(beat + (toTime - Time) * tempo / 60f, 6);
 			if (EventId >= events.Count)
 				goto return_ahead;
@@ -84,7 +84,6 @@ namespace Cryville.Crtr.Event {
 				}
 				stampedEvents.Add(sev);
 				if (ev.Priority >= 0) {
-					if (callback != null) callback(ev);
 					flag = true;
 				}
 				if (ev is Chart.Signature) {
@@ -93,12 +92,10 @@ namespace Cryville.Crtr.Event {
 				}
 				EventId++;
 			}
-			if (callback != null && !flag) callback(batch.First());
 			return;
 		return_ahead:
 			Time = toTime;
 			beat = toBeat;
-			if (callback != null) callback(null);
 		}
 		
 		IOrderedEnumerable<ChartEvent> GetEventBatch() {