move turn secret generation

src/blobs.js

@@ -23,7 +23,6 @@ exports = module.exports = {
 
 const assert = require('assert'),
     BoxError = require('./boxerror.js'),
-    crypto = require('crypto'),
     database = require('./database.js'),
     debug = require('debug')('box:blobs'),
     paths = require('./paths.js'),
@@ -59,9 +58,6 @@ async function generateSecrets() {
     if (!acmeAccountKey) throw new BoxError(BoxError.OPENSSL_ERROR, `Could not generate acme account key: ${safe.error.message}`);
     await set(exports.ACME_ACCOUNT_KEY, acmeAccountKey);
 
-    const turnSecret = 'a' + crypto.randomBytes(15).toString('hex'); // prefix with a to ensure string starts with a letter
-    await set(exports.ADDON_TURN_SECRET, Buffer.from(turnSecret));
-
     debug('generateSecrets: generating dhparams.pem');
     // https://security.stackexchange.com/questions/95178/diffie-hellman-parameters-still-calculating-after-24-hours
     const dhparams = safe.child_process.execSync('openssl dhparam -dsaparam 2048');