[autofix.ci] apply automated fixes

api/tests/unit_tests/core/tools/workflow_as_tool/test_tool.py

@@ -6,7 +6,7 @@ from collections.abc import Callable, Iterator
 from dataclasses import dataclass
 from types import SimpleNamespace
 from typing import Any
-from unittest.mock import MagicMock, patch
+from unittest.mock import patch
 
 import pytest
 from flask import Flask