Refactor charts

Quantower/Indicators/SDEV_chart.cs

@@ -37,9 +37,6 @@ public class SDEV_chart : Indicator
         this.indicator = new(source: bars.Select(this.DataSource),
                              period: this.Period, useNaN: true);
     }
-
-    protected void OnNewData(bool update = false) { this.indicator.Add(update); }
-
     protected override void OnUpdate(UpdateArgs args)
     {
         bool update = !(args.Reason == UpdateReason.NewBar ||
@@ -48,8 +45,6 @@ public class SDEV_chart : Indicator
                       this.GetPrice(PriceType.High), this.GetPrice(PriceType.Low),
                       this.GetPrice(PriceType.Close),
                       this.GetPrice(PriceType.Volume), update);
-        this.OnNewData(update);
-
         double result = this.indicator[this.indicator.Count - 1].v;
 
         this.SetValue(result, 0);