exim-smarthost: replace 200+ aliases with catchall router
Replace the long list of individual mail aliases with an extraRouters
catchall that redirects all @lassul.us mail to the same destinations.
Keep only lassulus@lassul.us as an explicit alias for the ACL.
Remove aidsballs.de (domain no longer exists, DNS returns NXDOMAIN).
The ACL already accepts all local_domains, and the catchall router
picks up anything the internet_aliases router doesn't match.