Deprecate API v2 (#7761)

* deprecate api-v2

* remove v2 test helpers

* remove unused string

website/server/libs/aws.js

@@ -0,0 +1,7 @@
+import AWS from 'aws-sdk';
+import nconf from 'nconf';
+
+export const S3 = new AWS.S3({
+  accessKeyId: nconf.get('S3:accessKeyId'),
+  secretAccessKey: nconf.get('S3:secretAccessKey'),
+});