🧹 [Remove unused tempfile import in benchmark.py]

[himadriganguly]

🎯 What: Removed the unused import tempfile statement from benchmark.py.

💡 Why: tempfile was imported but never utilized within the script. Removing unused imports improves codebase maintainability by cleaning up the namespace and eliminating unnecessary visual clutter.

✅ Verification:

• Modified benchmark.py and visually verified the removal via read_file.
• Ran the test suite via python -m pytest tests to ensure no regressions were introduced (the single failure test_main_success was confirmed as pre-existing).
• Executed benchmark.py successfully, confirming the script functions properly without the import.

✨ Result: The code health of benchmark.py is improved without altering any functional behavior.

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PR created automatically by Jules for task 6243112275757364430 started by @himadriganguly

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