Removed redundant checks for Unnerve

src/battle_main.c

@@ -4525,9 +4525,7 @@ u8 GetWhoStrikesFirst(u8 battler1, u8 battler2, bool8 ignoreChosenMoves)
     // Quick Claw and Custap Berry
     if (!gProtectStructs[battler1].quickDraw
      && ((holdEffectBattler1 == HOLD_EFFECT_QUICK_CLAW && gRandomTurnNumber < (0xFFFF * GetBattlerHoldEffectParam(battler1)) / 100)
-     || (!IsAbilityOnOpposingSide(battler1, ABILITY_UNNERVE)
-      && holdEffectBattler1 == HOLD_EFFECT_CUSTAP_BERRY
-      && HasEnoughHpToEatBerry(battler1, 4, gBattleMons[battler1].item))))
+     || (holdEffectBattler1 == HOLD_EFFECT_CUSTAP_BERRY && HasEnoughHpToEatBerry(battler1, 4, gBattleMons[battler1].item))))
         gProtectStructs[battler1].usedCustapBerry = TRUE;
 
     // Battler 2
@@ -4539,9 +4537,7 @@ u8 GetWhoStrikesFirst(u8 battler1, u8 battler2, bool8 ignoreChosenMoves)
     // Quick Claw and Custap Berry
     if (!gProtectStructs[battler2].quickDraw
      && ((holdEffectBattler2 == HOLD_EFFECT_QUICK_CLAW && gRandomTurnNumber < (0xFFFF * GetBattlerHoldEffectParam(battler2)) / 100)
-     || (!IsAbilityOnOpposingSide(battler2, ABILITY_UNNERVE)
-      && holdEffectBattler2 == HOLD_EFFECT_CUSTAP_BERRY
-      && HasEnoughHpToEatBerry(battler2, 4, gBattleMons[battler2].item))))
+     || (holdEffectBattler2 == HOLD_EFFECT_CUSTAP_BERRY && HasEnoughHpToEatBerry(battler2, 4, gBattleMons[battler2].item))))
         gProtectStructs[battler2].usedCustapBerry = TRUE;
 
     if (!ignoreChosenMoves)

src/item.c

@@ -959,12 +959,8 @@ bool32 IsPinchBerryItemEffect(u16 holdEffect)
     case HOLD_EFFECT_SP_DEFENSE_UP:
     case HOLD_EFFECT_CRITICAL_UP:
     case HOLD_EFFECT_RANDOM_STAT_UP:
-    #ifdef HOLD_EFFECT_CUSTAP_BERRY
     case HOLD_EFFECT_CUSTAP_BERRY:
-    #endif
-    #ifdef HOLD_EFFECT_MICLE_BERRY
     case HOLD_EFFECT_MICLE_BERRY:
-    #endif
         return TRUE;
     }