Bug 1732473 - Remove redundant privateBrowsingAllowed check r=zombie

The query method already validates whether access to private cookies is
allowed. It cannot yield private cookies if not allowed, so checking it
again in the loop of getAll is redundant..

Differential Revision: https://phabricator.services.mozilla.com/D127644

toolkit/components/extensions/parent/ext-cookies.js

@@ -565,12 +565,6 @@ this.cookies = class extends ExtensionAPI {
 
           let allowed = ["url", "name"];
           for (let { cookie, storeId } of query(details, allowed, context)) {
-            if (
-              isPrivateCookieStoreId(details.storeId) &&
-              !context.privateBrowsingAllowed
-            ) {
-              return Promise.reject({ message: "Unknown storeId" });
-            }
             Services.cookies.remove(
               cookie.host,
               cookie.name,