Revert "Merge pull request 'machine_id_v2' (#2052) from Qubasa/clan-core:machine_id_v2 into main"

This reverts commit 22a11abfe5, reversing
changes made to 208b71ac0e.

checks/installation/flake-module.nix

@@ -13,14 +13,10 @@
       {
         imports = [
           self.clanModules.single-disk
-          self.clanModules.factless
           (modulesPath + "/testing/test-instrumentation.nix") # we need these 2 modules always to be able to run the tests
           (modulesPath + "/profiles/qemu-guest.nix")
         ];
         clan.single-disk.device = "/dev/vdb";
-        clan.factless = {
-          diskId = "ac51e4623c804dcbbce0144ed8e16e55";
-        };
 
         environment.etc."install-successful".text = "ok";