[fix] remove vestigial Python code and define dependency for oneDAL make builds

[icfaust]

Description

Building on older ubuntu versions fail due to deploy/generate_pkgconfig.py being Python 3.6+ dependent. This was not standard until Ubuntu 22. These changes make it buildable on Ubuntu versions which maintain a python version (not explicitly Python3). Requiring Python is not included in the INSTALL.md, is set but without a version.

NOTE: All scripts under .ci/scripts/conformance-scripts/ are vestigial, and can be removed. (Are done so in this PR).

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Checklist to comply with before moving PR from draft:

PR completeness and readability

• I have reviewed my changes thoroughly before submitting this pull request.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes or created a separate PR with update and provided its number in the description, if necessary.
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Testing

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• I have extended testing suite if new functionality was introduced in this PR.

Performance

• I have measured performance for affected algorithms using scikit-learn_bench and provided at least summary table with measured data, if performance change is expected.
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• I have extended benchmarking suite and provided corresponding scikit-learn_bench PR if new measurable functionality was introduced in this PR.

[icfaust]

/intelci: run

[david-cortes-intel]

There's a line about it in the current master branch, two lines above where this would be inserted:
https://github.com/oneapi-src/oneDAL/blob/66f4858285c229a44be2ab17843edcbafaa989b9/INSTALL.md?plain=1#L23

It does mention "3.9" though so I guess there's no need to forego f-strings.

[icfaust]

Just for clarity, the mentioning of 3.9 was just introduced in your PR #2923 just after this PR was submitted (hence why I was confused). 3.9 requirement is set from here #2923 (comment) . I will rebase this PR to reflect your changes.

The only python script that is run for make install is this python file and is the source of the dependency. We do not test python consistently in any of our build steps. The private CI uses 3.12 as defined by infrastructure. The Ubuntu 24.04 docker runners use 3.12. The azure pipelines runners are also using default Ubuntu 22.04 python (3.10) runners. We do not test 3.9 nor 3.11 for oneDAL building.

Thus by changing these f-strings, we can support Ubuntu 20+ default python (i.e. python 2.7+).

@napetrov is there a reason why on build-side for oneDAL there is this python requirement?

[icfaust]

I have removed vestigial code from the codebase which does not get run in any CI step any longer.

[icfaust]

Move back to draft because sklearn conformance in this repo absolutely needs to be updated. On the border of disappointing.

[napetrov]

/azp run CI

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).