🧹 chore: Remove unused Optional import in max_in_array.py

[TusharQ15]

🎯 What: Removed unused Optional import from arrays/basics/max_in_array.py and arrays/max_in_array.py.
💡 Why: To improve code health, maintainability, and readability by removing dead code.
✅ Verification: Ran the test suite using PYTHONPATH=. pytest tests/ and executed the files individually using python3 to ensure no regressions were introduced.
✨ Result: Cleaner codebase with no unused imports in these files.

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PR created automatically by Jules for task 6560266271833611810 started by @TusharQ15

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