Bug 1402542 - re-enable subtest for Android r=dom-workers-and-storage-reviewers,ttung

Comment 14 on the bug seems to be obsolete, and the subtest hasn't failed
recently on different platforms. So if the issue causing the failures isn't
fixed, re-enabling should at least give some updated logs of what's happening.

Differential Revision: https://phabricator.services.mozilla.com/D82477

testing/web-platform/meta/service-workers/service-worker/postmessage.https.html.ini

@@ -1,11 +1,3 @@
 [postmessage.https.html]
-  disabled:
-    if (os == "android") and not e10s: https://bugzilla.mozilla.org/show_bug.cgi?id=1499972
-    if (os == "android") and e10s: https://bugzilla.mozilla.org/show_bug.cgi?id=1490546
-
   [postMessage to a redundant worker]
     expected: FAIL
-
-  [postMessage a transferable ArrayBuffer between ServiceWorker and Client over MessagePort]
-    expected: 
-      if (os == "android"): FAIL