Disable redirect to https

My current configuration for `Nginx` is

server {
listen 80 default_server;
listen [::]:80 default_server ipv6only=on;

root /usr/share/nginx/html;
index index.html index.html;

server_name url.tdl;


location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
proxy_pass http://localhost:2368;
}
}

server {
listen 443 ssl;
server_name url.tdl; # Replace with your domain

root /usr/share/nginx/html;
index index.html index.htm;

ssl on;
ssl_certificate /root/url.tdl.chained.crt;
ssl_certificate_key /url.tdl.me.key;

client_max_body_size 10G;

location / {
proxy_pass http://localhost:2368;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_buffering off;
}
}

In the above configuration file, I have no redirects written, but still the website redirects to HTTPS.

According to http://stackoverflow.com/questions/30072777/nginx-disable-http-to-https-redirect, they have disabled `listen 443` but I want to have the `443` as an option.

Is there any way to keep both options without any redirects?