fix: remove unused pytest import in test_hardcoded_secrets.py

Co-Authored-By: João <joao@crewai.com>

lib/crewai/tests/security/test_hardcoded_secrets.py

@@ -10,8 +10,6 @@ import tempfile
 from pathlib import Path
 from unittest.mock import patch
 
-import pytest
-
 from crewai.cli.create_flow import create_flow
 from crewai.llms.providers.openai_compatible.completion import (
     OPENAI_COMPATIBLE_PROVIDERS,