isort fix and leftover cleaning

freqtrade/optimize/hyperopt_loss_profit_drawdown.py

@@ -8,8 +8,10 @@ Possible to change `DRAWDOWN_MULT` to penalize drawdown objective for
 individual needs.
 """
 from pandas import DataFrame
-from freqtrade.optimize.hyperopt import IHyperOptLoss
+
 from freqtrade.data.btanalysis import calculate_max_drawdown
+from freqtrade.optimize.hyperopt import IHyperOptLoss
+
 
 # higher numbers penalize drawdowns more severely
 DRAWDOWN_MULT = 0.075
@@ -20,9 +22,8 @@ class ProfitDrawDownHyperOptLoss(IHyperOptLoss):
     def hyperopt_loss_function(results: DataFrame, trade_count: int, *args, **kwargs) -> float:
         total_profit = results["profit_abs"].sum()
 
-        # from freqtrade.optimize.optimize_reports.generate_strategy_stats()
         try:
-            profit_abs, _, _, _, _ = calculate_max_drawdown(results, value_col="profit_ratio")
+            profit_abs, _, _, _, _ = calculate_max_drawdown(results, value_col="profit_abs")
         except ValueError:
             profit_abs = 0