[Ordering] Remove deprecated 'ordering' datafield

[alxbilger]

According to the comment To remove for v24.12

[ci-depends-on https://github.com/sofa-framework/SofaPython3/pull/577]
[with-all-tests]

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Reviewers will merge this pull-request only if

• it builds with SUCCESS for all platforms on the CI.
• it does not generate new warnings.
• it does not generate new unit test failures.
• it does not generate new scene test failures.
• it does not break API compatibility.
• it is more than 1 week old (or has fast-merge label).

[sofabot]

[ci-depends-on] detected during build #3.

To unlock the merge button, you must

• Merge or close ordering field is deprecated, use NaturalOrderingMethod instead SofaPython3#577
  For this build, the following CMake flags will be set
  -DSOFAPYTHON3_GIT_REPOSITORY='https://github.com/sofa-framework/SofaPython3'
  -DSOFAPYTHON3_GIT_TAG='370095de1a03125cf192043a3d3a80bfab018efa'

[sofabot]

[ci-depends-on] detected during build #4.

All dependencies are merged/closed. Congrats! 👍