refactor(NGINX): remove settings from nginx.conf

- remove resolver
- remove proxy buffers
- these options should not be hardcoded, prevent conflicts

build/config/nginx.conf

@@ -41,9 +41,6 @@ http {
     # server configuration options
     server_tokens off;
     real_ip_recursive on;
-    resolver 1.1.1.1;
-    proxy_buffers 16 16k;
-    proxy_buffer_size 16k;
     include /etc/nginx/ssl-config/*.conf;
     include /etc/nginx/config/*.conf;