MAINT: Apply pre-commit

Remove byte-order-marker pre-commit check as there would be
many adjustments necessary

15_Boxing/csharp/OpponentAttackStrategy.cs

@@ -112,4 +112,4 @@ public class OpponentAttackStrategy : AttackStrategy
 
     private void RegisterOtherKnockedOut()
         => RegisterKnockout($"{Other} IS KNOCKED COLD AND {_opponent} IS THE WINNER AND CHAMP!");
-}
+}