🧹 Remove unused imports from Q5.py

[ManupaKDU]

🎯 What: Removed unused math, re, and sys imports from Learning/Part-1/Python/Q5.py.
💡 Why: These modules were explicitly imported but never referenced in the code, adding unnecessary clutter. Removing them improves the file's maintainability and readability without altering functionality.
✅ Verification: Verified syntax correctness using python3 -m py_compile and successfully ran the full test suite.
✨ Result: A cleaner, more maintainable file with no unused imports.

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PR created automatically by Jules for task 6796690299938829969 started by @ManupaKDU

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