Disabling the Gift List In ATG

Steps:

Go to --> /atg/registry/ContentRepositories component and remove the value in the initialRepositories property that references the /atg/commerce/gifts/Giftlist component.

Go to --> /atg/commerce/gifts/GiftlistTools component and set the giftlistRepository property to null.

Go to --> userProfile.xml file and remove properties that reference items in the Giftlists repository. The userProfile.xml file is located in the Commerce configuration layer. Remove the following tables.
    1. dcs_user_wishlist
    2. dcs_user_giftlist
    3. dcs_user_otherlist

eg:

Remove below repository entries

<!-- key into private wishlist -->
<table name="dcs_user_wishlist" type="auxiliary"
id-column-name="user_id">
  <property category="Commerce - Lists" name="wishlist"
            item-type="gift-list"
            repository="/atg/commerce/gifts/Giftlists"
            column-name="giftlist_id"cascade="insert,update,delete"
            display-name="Wish list"/>
</table>

<!-- key into user created giftlists -->
<table name="dcs_user_giftlist" type="multi"
id-column-name="user_id" multi-column-name="sequence_num">
  <property category="Commerce - Lists" name="giftlists"
            data-type="list" component-item-type="gift-list"
            repository="/atg/commerce/gifts/Giftlists"
            column-name="giftlist_id" display-name="Gift list"/>
</table>

<!-- key into giftlists found for other customers -->
<table name="dcs_user_otherlist" type="multi"
id-column-name="user_id" multi-column-name="sequence_num">
  <property category="Commerce - Lists" name="otherGiftlists"
            data-type="list" component-item-type="gift-list"
            repository="/atg/commerce/gifts/Giftlists"
            column-name="giftlist_id"
            display-name="Other gift lists"/>
</table>

Go to -->  updateGiftRepository and sendGiftPurchased processors from the commerce pipeline and Remove these processors . These processors are found in the processOrder pipeline chain. After these entries have been removed from the chain definition, create a link from the authorizePayment processor to the addOrderToRepository processor.

Thats it, Gift list has been disabled permanently in your application.