Remove Symbol and CurrentBar from Heikin-Ashi Indicator

...in order to make the indicator more consistent with others.

Indicators/HeikinAshi.cs

@@ -53,16 +53,6 @@ public class HeikinAshi : BarIndicator, IIndicatorWarmUpPeriodProvider
         /// </summary>
         public IndicatorBase<IndicatorDataPoint> Volume { get; }
 
-        /// <summary>
-        /// Gets the Heikin-Ashi Symbol
-        /// </summary>
-        public Symbol Symbol { get; private set; }
-
-        /// <summary>
-        /// Gets the Heikin-Ashi current TradeBar
-        /// </summary>
-        public TradeBar CurrentBar => new TradeBar(Open.Current.Time, Symbol, Open, High, Low, Close, Volume);
-
         /// <summary>
         /// Initializes a new instance of the <see cref="HeikinAshi"/> class using the specified name.
         /// </summary> 
@@ -128,8 +118,6 @@ protected override decimal ComputeNextValue(IBaseDataBar input)
             }
             Volume.Update(input.Time, volume);
 
-            Symbol = input.Symbol;
-
             return Close;
         }
 
@@ -143,8 +131,7 @@ public override void Reset()
             Low.Reset();
             Close.Reset();
             Volume.Reset();
-            Symbol = Symbol.Empty;
             base.Reset();
         }
     }
-}
+}