Deprecate API v2 (#7761)

* deprecate api-v2

* remove v2 test helpers

* remove unused string

website/server/libs/inAppPurchases.js

@@ -0,0 +1,22 @@
+import nconf from 'nconf';
+import iap from 'in-app-purchase';
+import Bluebird from 'bluebird';
+
+// Validation ERROR Codes
+// const INVALID_PAYLOAD = 6778001;
+// const CONNECTION_FAILED = 6778002;
+// const PURCHASE_EXPIRED = 6778003;
+
+iap.config({
+  // This is the path to the directory containing iap-sanbox/iap-live files
+  googlePublicKeyPath: nconf.get('IAP_GOOGLE_KEYDIR'),
+});
+
+module.exports = {
+  setup: Bluebird.promisify(iap.setup, { context: iap }),
+  validate: Bluebird.promisify(iap.validate, { context: iap }),
+  isValidated: iap.isValidated,
+  getPurchaseData: iap.getPurchaseData,
+  GOOGLE: iap.GOOGLE,
+  APPLE: iap.APPLE,
+};