Sync some function names with pokeemerald.

include/item.h

@@ -62,7 +62,7 @@ u8 ItemId_GetBattleUsage(u16 itemId);
 ItemUseFunc ItemId_GetBattleFunc(u16 itemId);
 u8 ItemId_GetSecondaryId(u16 itemId);
 u16 itemid_get_market_price(u16 itemId);
-void ClearItemSlotsInAllBagPockets(void);
+void ClearBag(void);
 void ClearPCItemSlots(void);
 void sub_809A824(u16 itemId);
 bool8 AddBagItem(u16 itemId, u16 amount);