devosSystem: fix iso build - can't remove core

lib/devos/devosSystem.nix

@@ -21,8 +21,7 @@ lib.nixosSystem (args // {
               # avoid unwanted systemd service startups
               # all strings in disabledModules get appended to modulesPath
               # so convert each to list which can be coerced to string
-              disabledModules = map (x: [ x ])
-                (lib.remove modules.core suites.allProfiles);
+              disabledModules = map lib.singleton suites.allProfiles;
 
               nix.registry = lib.mapAttrs (n: v: { flake = v; }) inputs;