Bug 1310297 - Remove test annotations using b2g, mulet or gonk: dom/system. r=RyanVM

MozReview-Commit-ID: 7uMpmw1OK0U

--HG--
extra : rebase_source : 97bc483023dc2f29773f50f42ba4489420700d32

dom/system/tests/chrome.ini

@@ -1,5 +1,4 @@
 [DEFAULT]
-skip-if = buildapp == 'b2g'
 support-files = worker_constants.js
 
 [test_constants.xul]

dom/system/tests/mochitest.ini

@@ -3,7 +3,6 @@ support-files =
   preload-SystemUpdateManager-jsm.js
   file_bug1197901.html
 
-[test_system_update_enabled.html]
-skip-if = buildapp != 'b2g'
 [test_bug1197901.html]
-skip-if = buildapp == 'mulet'
+[test_system_update_enabled.html]
+skip-if = true # Tests only ran on B2G