Remove unused authentication methods

pm2Start.js

@@ -7,16 +7,6 @@ var _ = require('lodash');
 var instances = process.env.INSTANCES || 1;
 var serverName = process.env.SERVER_NAME || 'server';
 var maxMemory = process.env.MAX_MEMORY || '390M';
-var transportOptions = {
-  type: 'smtp',
-  service: 'Mandrill',
-  auth: {
-    user: process.env.MANDRILL_USER || false,
-    pass: process.env.MANDRILL_PASSWORD
-  }
-};
-
-var mailReceiver = process.env.MAIL_RECEIVER || false;
 
 pm2.connect(function() {
   pm2.start({
@@ -36,46 +26,3 @@ pm2.connect(function() {
     pm2.disconnect();
   });
 });
-
-
-if (transportOptions.auth.user && mailReceiver) {
-  console.log('setting up mailer');
-  var transporter = nodemailer.createTransport(transportOptions);
-  var compiled = _.template(
-    'An error has occurred on server ' +
-    '<% name %>\n' +
-    'Stack Trace:\n\n\n<%= stack %>\n\n\n' +
-    'Context:\n\n<%= text %>'
-  );
-
-  pm2.launchBus(function(err, bus) {
-    if (err) {
-      return console.error(err);
-    }
-    console.log('event bus connected');
-
-    bus.on('process:exception', function(data) {
-      var text;
-      var stack;
-      var name;
-      try {
-        data.date = moment(data.at || new Date())
-          .tz('America/Los_Angeles')
-          .format('MMMM Do YYYY, h:mm:ss a z');
-
-        text = JSON.stringify(data, null, 2);
-        stack = data.data.stack;
-        name = data.process.name;
-      } catch (e) {
-        return e;
-      }
-
-      transporter.sendMail({
-        to: mailReceiver,
-        from: 'team@freecodecamp.com',
-        subject: 'Server exception',
-        text: compiled({ name: name, text: text, stack: stack })
-      });
-    });
-  });
-}