remove rapids-get-pr-{conda,wheel}-artifact

[jameslamb]

Contributes to #145

• removes rapids-get-pr-conda-artifact and rapids-get-pr-wheel-artifact
• renames _rapids-get-pr-artifact to rapids-get-pr-artifact

Notes for Reviewers

Is this safe to merge?

Yes, these things are only used for testing purposes in PRs, as described in https://docs.rapids.ai/resources/github-actions/#using-conda-ci-artifacts-in-other-prs

Merging this shouldn't break CI for any projects. GitHub search with evidence of that: https://github.com/search?q=org%3Arapidsai+%22rapids-get-pr%22+AND+NOT+is%3Aarchived&type=code

How I tested this

Opened an rmm PR (rapidsai/rmm#2008) and tested that the docs as of rapidsai/docs#653 worked on a cudf PR (NVIDIA/cudf#19593 (comment)).

[jameslamb]

This is working! See "How I tested this" in the description, specifically NVIDIA/cudf#19593 (comment)

[ajschmidt8]

From the search results in your PR body, I did see this result, which may need to be updated: https://github.com/rapidsai/graph_dl/blob/25df0db6c390f35308c7d3e0276eaf48396cd878/scripts/get_ci_artifacts.sh#L118

[jameslamb]

Thanks for double-checking!

Yep I already have a PR up for that: https://github.com/rapidsai/graph_dl/pull/822

And it's fine to merge this without waiting on that to be merged... I don't think there's anything automated using that repo, so they can pin back to an older gha-tools commit if needed. @nv-rliu can come yell at me if I break it 😛

[jameslamb]

Merging this now that the corresponding docs change is merged: rapidsai/docs#653