nginx serve static file without ssl - ssl

Question

for increment speed of my project, i want serve static file without ssl, problem is im very beginner with nginx, my actual nginx configuration is :
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name _;
return 301 https://$host$request_uri;
}
server {
listen 443;
ssl on;
gzip on;
gzip_min_length 1000;
gzip_proxied expired no-cache no-store private auth;
gzip_types text/plain text/html text/css application/json application/javascript application/x-javascript text/javascript text/xml application/xml application/rss+xml application/atom+xml application/rdf+xml;
gzip_disable "MSIE [1-6]\.";
gzip_vary on;
server_name selfmarket.net www.selfmarket.net;
ssl_certificate /etc/letsencrypt/live/selfmarket.net/cert.pem; # path to your cacert.pem
ssl_certificate_key /etc/letsencrypt/live/selfmarket.net/privkey.pem; # path to your privkey.pem
fastcgi_param HTTPS on;
fastcgi_param HTTP_SCHEME https;
# Serve static files and uploads
location ^~ /static/ {
expires 30d;
add_header Pragma public;
add_header Cache-Control "public";
root /opt/master/app/;
}
location / {
proxy_pass 'http://127.0.0.1:8080/';
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $server_name;
}
}
in this moment i'm force all traffic in ssl, need change for static not use ssl. How i can do this ?