chore: prune unnecessary code (automated weekly cleanup)

[Miyamura80]

Removed a single line of commented-out code in utils/llm/dspy_langfuse.py per the unnecessary code cleanup guidelines. No other unnecessary code (dead functions, unused imports, etc.) was found by vulture, pylint, and ruff. All tests pass.

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PR created automatically by Jules for task 15516917517146552891 started by @Miyamura80

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Summary by cubic

Removes a single commented-out line in utils/llm/dspy_langfuse.py to clean up dead code. No behavior changes.

^{Written for commit 91a92b7. Summary will update on new commits.}

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[cubic-dev-ai]

No issues found across 1 file

_{Re-trigger cubic}