Bug 1754955 - Enable dFPI for web platform test in Nightly, r=pbz

Differential Revision: https://phabricator.services.mozilla.com/D139393

testing/profiles/web-platform/user.js

@@ -68,9 +68,6 @@ user_pref("nglayout.initialpaint.unsuppress_with_no_background", true);
 user_pref("media.block-autoplay-until-in-foreground", false);
 // Enable AppCache globally for now whilst it's being removed in Bug 1584984
 user_pref("browser.cache.offline.enable", true);
-// Enable blocking access to storage from tracking resources by default.
-// We don't want to run WPT using BEHAVIOR_REJECT_TRACKER_AND_PARTITION_FOREIGN (5 - aka Dynamic First Party Isolation) yet.
-user_pref("network.cookie.cookieBehavior", 4);
 // Force a light color scheme unless explicitly overriden by pref.
 user_pref("layout.css.prefers-color-scheme.content-override", 1);
 // Force OffscreenCanvas support