Update Fenix initial_experiments.json based on the current first-run experiments in experimenter

(cherry picked from commit 9a449e72aa68ef5afa5dc1eb6a7e8229d03d393b)

app/src/main/res/raw/initial_experiments.json

@@ -135,67 +135,6 @@
       "featureValidationOptOut": false,
       "localizations": null,
       "locales": null
-    },
-    {
-      "schemaVersion": "1.12.0",
-      "slug": "beta-android-onboarding-redesign-treatment-a-rollout",
-      "id": "beta-android-onboarding-redesign-treatment-a-rollout",
-      "arguments": {},
-      "application": "org.mozilla.firefox_beta",
-      "appName": "fenix",
-      "appId": "org.mozilla.firefox_beta",
-      "channel": "beta",
-      "userFacingName": "Beta Android Onboarding Redesign - Treatment A Rollout",
-      "userFacingDescription": "Testing a new onboarding experience.",
-      "isEnrollmentPaused": false,
-      "isRollout": true,
-      "bucketConfig": {
-        "randomizationUnit": "nimbus_id",
-        "namespace": "fenix-juno-onboarding-beta-mobile_first_run-rollout-1",
-        "start": 0,
-        "count": 10000,
-        "total": 10000
-      },
-      "featureIds": [
-        "juno-onboarding"
-      ],
-      "probeSets": [],
-      "outcomes": [
-        {
-          "slug": "default-browser",
-          "priority": "primary"
-        }
-      ],
-      "branches": [
-        {
-          "slug": "treatment-a",
-          "ratio": 1,
-          "feature": {
-            "featureId": "this-is-included-for-mobile-pre-96-support",
-            "enabled": false,
-            "value": {}
-          },
-          "features": [
-            {
-              "featureId": "juno-onboarding",
-              "enabled": true,
-              "value": {
-                "enabled": true
-              }
-            }
-          ]
-        }
-      ],
-      "targeting": "((is_already_enrolled) || ((isFirstRun == 'true') && (app_version|versionCompare('118.!') >= 0)))",
-      "startDate": "2023-09-06",
-      "enrollmentEndDate": null,
-      "endDate": null,
-      "proposedDuration": 28,
-      "proposedEnrollment": 7,
-      "referenceBranch": "treatment-a",
-      "featureValidationOptOut": false,
-      "localizations": null,
-      "locales": null
     }
   ]
 }