services: web: Do not export record type descriptors.
* gnu/services/web.scm (<httpd-configuration>, <httpd-virtualhost>)
(<httpd-config-file>, <httpd-module>, <nginx-configuration>)
(<nginx-server-configuration>, <nginx-upstream-configuration>)
(<nginx-location-configuration>, <nginx-named-location-configuration>)
(<php-fpm-configuration>, <php-fpm-dynamic-process-manager-configuration>)
(<php-fpm-static-process-manager-configuration>)
(<php-fpm-on-demand-process-manager-configuration>)
(<tailon-configuration-file>, <tailon-configuration>)
(<varnish-configuration>, <patchwork-database-configuration>)
(<patchwork-settings-module>, <patchwork-configuration>)
(<mumi-configuration>): Do not export.
a143e92446