nixos/geoipupdate: set proper SystemCallFilter

nixos/modules/services/misc/geoipupdate.nix

···
         ProtectKernelTunables = true;
         ProtectProc = "invisible";
         ProcSubset = "pid";
-        SystemCallFilter = [ "@system-service" "~@privileged" "~@resources" ];
+        SystemCallFilter = [ "@system-service" "~@privileged" ];
         RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
         RestrictRealtime = true;
         RestrictNamespaces = true;