How to remove debugging from an Express app?
Update
To completely remove debugging use:
var io = require('socket.io').listen(app, { log: false });
Where app is node.js http server / express etc.
You forgot to mention you are also using socket.io. This is coming from socket.io. You can disable this by configuration:
io.set('log level', 1); // reduce logging
Just configure the log level to number 1 to avoid income unnecessary messages.
You can figure out more information about Socket.IO options on this link.