RiskManager

- GetOrderSize: remove returning candle's open price

risk_manager.go

@@ -9,7 +9,7 @@ type RiskManager interface {
 	GetWinStreak() uint
 	GetLoseStreak() uint
 
-	GetOrderSize(symbol string, bid float64) (float64, float64)
+	GetOrderSize(symbol string, bid float64) float64
 	UpdatePositions() error
 	ResetState(streaks bool)
 }