chore: clean release tooling imports

tools/checks/module-installer-rollback-drill.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python
 from __future__ import annotations
 
+# Application imports intentionally follow the test environment and source-path setup below.
+# ruff: noqa: E402
+
 import argparse
 import json
 import os
@@ -31,7 +34,6 @@ from govoplan_core.core.maintenance import MaintenanceMode, save_maintenance_mod
 from govoplan_core.core.module_installer import (
     cancel_module_installer_request,
     claim_next_module_installer_request,
-    module_installer_daemon_status,
     module_installer_lock_status,
     queue_module_installer_request,
     read_module_installer_run,
@@ -44,8 +46,6 @@ from govoplan_core.core.module_installer import (
 )
 from govoplan_core.core.module_management import (
     ModuleInstallPlan,
-    ModuleInstallPlanItem,
-    saved_desired_enabled_modules,
     saved_module_install_plan,
     save_desired_enabled_modules,
     save_module_install_plan,