Laravel redirect issue with domain and forge.

So my issue is that i've few subdomains on apache and laravel app on example.com. Now i moved to forge, and forge is not letting me redirect to www and every time i visit subdomains they are hitting, nginx (forge) server and not picking it at apache server.

I used Curl -I to check the host for my subdomain. sub.example.com

HTTP/1.1 200 OK
Server: nginx 
Date: Sun, 10 Jan 2016 00:36:12 GMT
Content-Type: text/html; charset=utf-8
Connection: close

My question.

How do i remove the following from sites-available or sites-enabled in /etc/nginx/

return 301 $scheme //domain.com$request_uri