Bug 1802953 - Disable Android fission tests running in isolateNothing mode

They had only been enabled temporarily to get their expectations updated by
the web-platform-tests sync automation.

Differential Revision: https://phabricator.services.mozilla.com/D166520

mobile/android/app/geckoview-prefs.js

@@ -99,9 +99,6 @@ pref("extensions.formautofill.loglevel", "Warn");
 pref("pdfjs.handleOctetStream", true);
 pref("browser.download.open_pdf_attachments_inline", true);
 pref("pdfjs.annotationEditorMode", -1);
-
-// set isolating strategy for Fission to isolateNothing
-pref("fission.webContentIsolationStrategy", 0);
 #else
 pref("pdfjs.disabled", true);
-#endif
+#endif

taskcluster/ci/test/web-platform.yml

@@ -39,12 +39,6 @@ web-platform-tests:
     tier:
         by-test-platform:
             android-em-7.0-x86_64-qr/debug-isolated-process: 3
-            android-em-7.*:
-                by-variant:
-                    webrender-sw: 3
-                    no-fission: default
-                    webrender-sw+no-fission: default
-                    default: 3
             default: default
     chunks:
         by-test-platform:
@@ -95,9 +89,6 @@ web-platform-tests:
                     default: []
             default:
                 by-test-platform:
-                    android-em-7.0-x86_64-qr/debug-isolated-process: ['mozilla-central']
-                    android-em-7.0-x86_64-qr/debug: ['mozilla-central']
-                    android-em-7.0-x86_64-shippable-qr: ['mozilla-central']
                     android.*: []
                     default: built-projects
     mozharness: