trim docs environment

[jameslamb]

Replaces #57, which I accidentally closed by deleting my fork when the repo was flipped to public.

The docs group in rapids-dependency-file-generator currently re-declares a couple of dependencies which are only needed because they're direct dependencies of libnvforest / nvforest.

Those should just be pulled through directly via installing libnvforest / nvforest:

nvforest/ci/build_docs.sh

Lines 7 to 8 in 9d28631

	CPP_CHANNEL=$(rapids-download-conda-from-github cpp)
	PYTHON_CHANNEL=$(rapids-download-from-github "$(rapids-package-name conda_python nvforest --stable --cuda)")

This removes them from that list, so the docs environment will get smaller if those dependencies are ever removed here.

[coderabbitai]

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📒 Files selected for processing (1)

• dependencies.yaml

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• dependencies.yaml

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📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Removed dependencies from build and documentation configurations, simplifying setup and reducing the dependency footprint across development and documentation environments.

Walkthrough

Three dependency entries (depends_on_cuda_python, depends_on_libraft_headers, depends_on_librmm) were removed from both the "all" and "docs" dependency groups in dependencies.yaml. No structural changes or remaining include modifications.

Changes

Cohort / File(s)	Summary
Dependency Configuration dependencies.yaml	Removed three dependency includes (depends_on_cuda_python, depends_on_libraft_headers, depends_on_librmm) from both "all" and "docs" groups.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Suggested reviewers

• hcho3

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'trim docs environment' clearly and concisely summarizes the main change: removing dependencies from the docs group to reduce its size.
Description check	✅ Passed	The description is directly related to the changeset, explaining the rationale for removing dependencies from the docs group and referencing the upstream nvforest repository.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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