Bug 1559169: Stop running raptor-scn-power-idle-gecko view on integration and beta branches. r=perftest-reviewers,Bebe

Differential Revision: https://phabricator.services.mozilla.com/D35302

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

taskcluster/ci/test/raptor.yml

@@ -1339,7 +1339,7 @@ raptor-scn-power-idle-geckoview:
     target: geckoview_example.apk
     run-on-projects:
         by-test-platform:
-            android-hw.*/pgo: ['try', 'trunk', 'mozilla-beta', 'mozilla-central']
+            android-hw.*/pgo: ['try', 'mozilla-central']
             default: ['try']
     tier: 3
     max-run-time: 1800