Revert "Add Open App Store & Notify App Install Completed Capability (#2626)" (#2636)

This partially reverts commit b558cec.

Author: TrevorJoelHarris

apps/teams-test-app/e2e-test-data/otherAppStateChange.json

@@ -23,22 +23,17 @@
       "type": "registerAndRaiseEvent",
       "boxSelector": "#box_otherAppStateChange_registerInstallHandler",
       "eventName": "otherApp.install",
-      "eventData": {
-        "appIds": ["123", "456"]
-      },
+      "eventData":
+        {
+          "appIds": ["123", "456"]
+        },
       "expectedTestAppValue": "received"
     },
     {
       "title": "unregisterAppInstallationHandler - Sends but not processed if app is not approved",
       "type": "callResponse",
       "boxSelector": "#box_otherAppStateChange_unregisterInstallHandler",
       "expectedTestAppValue": "received"
-    },
-    {
-      "title": "notifyInstallCompleted - Success",
-      "type": "callResponse",
-      "boxSelector": "#box_otherAppStateChange_notifyInstallCompleted",
-      "expectedTestAppValue": "notified"
     }
   ]
 }