Remove item_list

Author: hsubox76

packages/firebase/index.d.ts

@@ -4527,7 +4527,6 @@ declare namespace firebase.analytics {
     event_label?: string;
     event_category: string;
     shipping_tier?: string;
-    item_list?: string;
     item_list_id?: string;
     item_list_name?: string;
     promotion_id?: string;