Deletes a specific item in the cart, removing it from the cart.
DELETE
/2026-4/carts/{cartId}/items/{cartItemId}
curl \
--request DELETE 'https://api.pace.cloud/cart/2026-4/carts/3682ea8c-4ca4-45d2-bc1e-e6e4dc597ffb/items/8576a377-5a1b-4d04-8051-36cb996e9f6e' \
--header "Authorization: Bearer $ACCESS_TOKEN"