minor #5536 Removed reference to remove HTTPS off from nginx configuration (wjzijderveld)

This PR was merged into the 2.3 branch.

Discussion
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Removed reference to remove HTTPS off from nginx configuration

| Q             | A
| ------------- | ---
| Doc fix?      | yes
| New docs?     | no
| Applies to    | all
| Fixed tickets | #5517

As explained and confirmed in #5517 the `https off` flag could be causing issues, in my opinion it's better to rely on the defaults distributions give.

An alternative would be to replace the lines with `HTTPS $https;`, [nginx will fill $https depending on current request](http://nginx.org/en/docs/http/ngx_http_core_module.html#var_https). But I think it's less confusing if we just let the lines out of the example.

Commits
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3878e14 Removed reference to remove HTTPS off from nginx configuration

Author: xabbuh

cookbook/configuration/web_server_configuration.rst

@@ -269,15 +269,13 @@ The **minimum configuration** to get your application running under Nginx is:
             fastcgi_split_path_info ^(.+\.php)(/.*)$;
             include fastcgi_params;
             fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
-            fastcgi_param HTTPS off;
         }
         # PROD
         location ~ ^/app\.php(/|$) {
             fastcgi_pass unix:/var/run/php5-fpm.sock;
             fastcgi_split_path_info ^(.+\.php)(/.*)$;
             include fastcgi_params;
             fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
-            fastcgi_param HTTPS off;
             # Prevents URIs that include the front controller. This will 404:
             # http://domain.tld/app.php/some-path
             # Remove the internal directive to allow URIs like this