refactor: remove unused imports

tests/agent/mcp/test_device_tools.py

@@ -8,7 +8,6 @@ device_config_send / device_show_run / vpcs_config_set.
 import json
 from unittest.mock import MagicMock, patch
 
-import pytest
 
 VPCS_MOD = "gns3server.agent.gns3_copilot.tools_v2.vpcs_tools_netmiko"
 

tests/agent/mcp/test_tool_params.py

@@ -10,8 +10,6 @@ This catches issues like:
 """
 
 import ast
-import os
-import sys
 from pathlib import Path
 
 import pytest