remove unused 'rapids-date-string' in build scripts

[jameslamb]

rapids-date-string is used to set the environment variable RAPIDS_DATE_STRING, which is not used here.

It's included in a build script here, probably as an accident from copying patterns from RAPIDS projects.

This removes it.

Notes for Reviewers

Noticed this because as part of rapidsai/build-planning#218, I'm removing rapids-date-string (rapidsai/gha-tools#272). This prevents that change from breaking CI.

Summary by CodeRabbit

• Chores
  • Updated the Conda Python build process by removing an unnecessary package sourcing step.
  • All other build, versioning, logging, retry, and cache reporting behavior remains unchanged.

[coderabbitai]

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ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between b555209 and cd93b56.

📒 Files selected for processing (1)

• ci/build_conda_python.sh

💤 Files with no reviewable changes (1)

• ci/build_conda_python.sh

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📝 Walkthrough

Walkthrough

The Conda Python build script no longer sources rapids-date-string. Other build behavior remains unchanged.

Changes

Cohort / File(s)	Summary
Conda build script ci/build_conda_python.sh	Removes the rapids-date-string sourcing command.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the removal of the unused rapids-date-string dependency from the build scripts.
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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• Create PR with unit tests

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