Remove legacy header X-Download-Options in nginx.conf examples (nextcloud#2077)

The header was relevant for Internet Explorer only and was removed from the nextcloud/server code: nextcloud/server@ea0e45d

Signed-off-by: Andrés Maldonado <[email protected]>

Author: am97

.examples/docker-compose/insecure/mariadb/fpm/web/nginx.conf

@@ -63,7 +63,6 @@ http {
         # HTTP response headers borrowed from Nextcloud `.htaccess`
         add_header Referrer-Policy                      "no-referrer"       always;
         add_header X-Content-Type-Options               "nosniff"           always;
-        add_header X-Download-Options                   "noopen"            always;
         add_header X-Frame-Options                      "SAMEORIGIN"        always;
         add_header X-Permitted-Cross-Domain-Policies    "none"              always;
         add_header X-Robots-Tag                         "noindex, nofollow" always;

.examples/docker-compose/insecure/postgres/fpm/web/nginx.conf

@@ -63,7 +63,6 @@ http {
         # HTTP response headers borrowed from Nextcloud `.htaccess`
         add_header Referrer-Policy                      "no-referrer"       always;
         add_header X-Content-Type-Options               "nosniff"           always;
-        add_header X-Download-Options                   "noopen"            always;
         add_header X-Frame-Options                      "SAMEORIGIN"        always;
         add_header X-Permitted-Cross-Domain-Policies    "none"              always;
         add_header X-Robots-Tag                         "noindex, nofollow" always;

.examples/docker-compose/with-nginx-proxy/mariadb/fpm/web/nginx.conf

@@ -63,7 +63,6 @@ http {
         # HTTP response headers borrowed from Nextcloud `.htaccess`
         add_header Referrer-Policy                      "no-referrer"       always;
         add_header X-Content-Type-Options               "nosniff"           always;
-        add_header X-Download-Options                   "noopen"            always;
         add_header X-Frame-Options                      "SAMEORIGIN"        always;
         add_header X-Permitted-Cross-Domain-Policies    "none"              always;
         add_header X-Robots-Tag                         "noindex, nofollow" always;

.examples/docker-compose/with-nginx-proxy/postgres/fpm/web/nginx.conf

@@ -63,7 +63,6 @@ http {
         # HTTP response headers borrowed from Nextcloud `.htaccess`
         add_header Referrer-Policy                      "no-referrer"       always;
         add_header X-Content-Type-Options               "nosniff"           always;
-        add_header X-Download-Options                   "noopen"            always;
         add_header X-Frame-Options                      "SAMEORIGIN"        always;
         add_header X-Permitted-Cross-Domain-Policies    "none"              always;
         add_header X-Robots-Tag                         "noindex, nofollow" always;