Remove deprecated nvtext::edit_distance_matrix

[davidwendt]

Description

Removes the nvtext::edit_distance_matrix() API and pylibcudf and python equivalents deprecated in 26.04.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 9c5307b and 8f973f7.

📒 Files selected for processing (2)

• docs/cudf/source/cudf/api_docs/series.rst
• python/pylibcudf/pylibcudf/nvtext/edit_distance.pyx

💤 Files with no reviewable changes (1)

• docs/cudf/source/cudf/api_docs/series.rst

🚧 Files skipped from review as they are similar to previous changes (1)

• python/pylibcudf/pylibcudf/nvtext/edit_distance.pyx

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📝 Walkthrough

Summary by CodeRabbit

• Breaking Changes

  • Removed the deprecated edit_distance_matrix method from all public interfaces; migrate to edit_distance for string distance operations.

• Documentation

  • API docs updated to remove references to the deprecated method.

Walkthrough

The PR removes the deprecated edit_distance_matrix API across C++ headers/implementation, Python accessors, and Cython bindings, refactors the C++ device compute to a diagonal/tiled algorithm for edit_distance, and updates documentation accordingly.

Changes

Deprecation Removal: edit_distance_matrix

Layer / File(s)	Summary
C++ API removal and compute refactor cpp/include/nvtext/edit_distance.hpp, cpp/src/text/edit_distance.cu	C++ header removes the deprecated edit_distance_matrix declaration. Implementation replaces prior 2-row device compute with a tiled/diagonal compute_distance, removes matrix-specific kernel/buffer logic and the public edit_distance_matrix forwarder, and retains edit_distance API.
Python accessor method removal python/cudf/cudf/core/accessors/string.py, python/cudf/cudf/core/column/string.py	StringMethods and StringColumn remove deprecated edit_distance_matrix methods (including FutureWarning and libcudf call); module warnings import cleaned up.
Cython binding and type stub updates python/pylibcudf/pylibcudf/libcudf/nvtext/edit_distance.pxd, python/pylibcudf/pylibcudf/nvtext/edit_distance.pxd, python/pylibcudf/pylibcudf/nvtext/edit_distance.pyx, python/pylibcudf/pylibcudf/nvtext/edit_distance.pyi	Cython externs and type stubs remove edit_distance_matrix and expose only edit_distance. edit_distance extern now includes explicit stream and device_async_resource_ref mr parameters and exception handling; __all__ updated.
API documentation removal docs/cudf/source/cudf/api_docs/series.rst	Series.str autosummary no longer lists edit_distance_matrix.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~45 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Remove deprecated nvtext::edit_distance_matrix' directly and clearly describes the main change: removal of a deprecated API across the codebase.
Description check	✅ Passed	The description explicitly states that the PR removes the nvtext::edit_distance_matrix() API and its equivalents, which aligns with the changeset modifications across header files, CUDA implementation, documentation, and Python bindings.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[igorpeshansky]

Mostly LGTM, with one optional style nit.

[coderabbitai]

Actionable comments posted: 0

[davidwendt]

/merge