delete test_cli test

we already cover this in integration tests

pkgs/clan-cli/tests/test_machines_update_cli.py

@@ -1,21 +1,12 @@
-import argparse
 import os
 import shutil
 from pathlib import Path
 from tempfile import TemporaryDirectory
 
-import pytest
 from environment import mock_env
 from host_group import HostGroup
 
-from clan_cli.machines.update import deploy_nixos, register_update_parser
-
-
-def test_cli() -> None:
-    parser = argparse.ArgumentParser()
-    register_update_parser(parser)
-    with pytest.raises(SystemExit):
-        parser.parse_args(["--help"])
+from clan_cli.machines.update import deploy_nixos
 
 
 def test_update(clan_flake: Path, host_group: HostGroup) -> None: