Bug 1575388 - Mark browser_temporary_permissions.js as passing with Fission. r=kmag

Differential Revision: https://phabricator.services.mozilla.com/D42764

--HG--
extra : moz-landing-system : lando

browser/base/content/test/permissions/browser.ini

@@ -20,7 +20,6 @@ support-files=
 [browser_reservedkey.js]
 skip-if = fission && debug # Crashes: @ mozilla::dom::ServiceWorkerManagerService::PropagateUnregister(unsigned long, mozilla::ipc::PrincipalInfo const&, nsTSubstring<char16_t> const&)
 [browser_temporary_permissions.js]
-fail-if = fission
 support-files =
   temporary_permissions_subframe.html
   ../webrtc/get_user_media.html