🧹 Remove unused socket import from poller/security.py

[d3mocide]

🎯 What: Removed unused socket import from poller/security.py.
💡 Why: It removes unused imports to improve codebase cleanliness and maintainability.
✅ Verification: Ran python3 -m py_compile poller/security.py to check for syntax errors and ran tests using python3 -m unittest discover poller/tests which passed.
✨ Result: Improved maintainability and reduced minor clutter by removing dead code.

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PR created automatically by Jules for task 13688236489786646327 started by @d3mocide

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