chore(retrievers): remove single_query_passage dead helper

[detail-app]

📝 Changes Description

Removes the unused top-level single_query_passage helper from dspy/retrievers/retrieve.py (10 lines).

The function had zero callers anywhere in the codebase (production, tests, docs, or notebooks), was not exported in any __init__.py, and was never documented. Its only two call sites — in Retrieve.forward's with_metadata branch and the now-deleted RetrieveThenRerank class — were removed in the V2.6 deprecations (stanfordnlp#1936), leaving the helper orphaned. It has been unreferenced since.

History

• Last materially changed June 2024 (Colbert local mode support both as retriever and reranker.  stanfordnlp/dspy#797 @Athe-kunal)

✅ Contributor Checklist

• Pre-Commit checks are passing (locally and remotely)
• Title of your PR / MR corresponds to the required format
• Commit message follows required format {label}(dspy): {message}

⚠️ Warnings

None.

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[greptile-apps]

Greptile Summary

Removes the unused, unexported single_query_passage helper from the retriever module.

• Deletes dead aggregation logic with no known consumers.
• Leaves the supported Retrieve API unchanged.

Confidence Score: 5/5

This PR appears safe to merge because it only removes an unused, unexported helper with no repository consumers.

No actionable failures remain; the deleted symbol was absent from package exports and had no references in production code, tests, documentation, examples, or notebooks.

Important Files Changed

Filename	Overview
dspy/retrievers/retrieve.py	Safely removes an unreferenced module-level helper without changing the exported retriever API.

_{Reviews (1): Last reviewed commit: "chore(retrievers): remove single_query_p..." | Re-trigger Greptile}