ipa-restore: remove /etc/httpd/conf.d/nss.conf
    
    When ipa-restore is called, it needs to delete the file
    nss.conf, otherwise httpd server will try to initialize
    the NSS engine and access NSSCertificateDatabase.
    This is a regression introduced with the switch from NSS
    to SSL.
    
    https://pagure.io/freeipa/issue/7440
    
    Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>