GH-44223: [Dev] Use "Gandiva" instead of "C++ - Gandiva" label

[kou]

Rationale for this change

We have Gandiva related codes. So "C++ -" isn't match the current code base.

What changes are included in this PR?

Remove the "C++ - " part.

Are these changes tested?

No.

Are there any user-facing changes?

No.

• GitHub Issue: [Dev] Use "Gandiva" instead of "C++ - Gandiva" label #44223

[github-actions]

⚠️ GitHub issue #44223 has been automatically assigned in GitHub to PR creator.

[raulcd]

LGTM, do we also have to create the label manually here: https://github.com/apache/arrow/labels ?

[kou]

Ah, can we rename the existing "C++ - Gandiva" label to "Gandiva"?

[raulcd]

Ah, can we rename the existing "C++ - Gandiva" label to "Gandiva"?

Yes, I am going to rename the label and merge this.

[raulcd]

I've renamed the label: Component: Gandiva

[kou]

Thanks!

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit 26aa75f.

There were no benchmark performance regressions. 🎉

The full Conbench report has more details. It also includes information about 1 possible false positive for unstable benchmarks that are known to sometimes produce them.