Remove dependency on DNS blocklist for DNS server

modules/periodic.nix

@@ -14,7 +14,7 @@ in {
   };
 
   # Fetch hosts-blocklists daily
-  # FIXME Download the list if the file doesn't exist the first time
+  # TODO Download the list if the file doesn't exist the first time
   systemd.services.download-dns-blocklist = {
     description = "Download hosts-blocklists";
     wantedBy = [ "default.target" ];
@@ -27,7 +27,6 @@ in {
     postStop = ''
       chown -R dnsmasq ${stateDir}
     '';
-    requiredBy = [ "dnsmasq.service" ];
     startAt = "02:00:00";
   };