Simplify test v2 strategy

tests/strategy/strats/strategy_test_v2.py

@@ -150,13 +150,3 @@ class StrategyTestV2(IStrategy):
             ),
             'sell'] = 1
         return dataframe
-
-    def adjust_trade_position(self, trade: Trade, current_time: datetime, current_rate: float,
-                              current_profit: float,
-                              min_stake: Optional[float], max_stake: float, **kwargs):
-
-        if current_profit < -0.0075:
-            orders = trade.select_filled_orders('buy')
-            return round(orders[0].cost, 0)
-
-        return None