Remove unused nox dev dependency & mentions

[Wumpf]

What

• Fixes Replace nox by pixi #5898

We stopped using nox for python testing quite a while ago.

Checklist

• pass main ci
• confirm that pixi run py-test works fine locally
• I have read and agree to Contributor Guide and the Code of Conduct
• I've included a screenshot or gif (if applicable)
• I have tested the web demo (if applicable):
  • Using examples from latest main build: rerun.io/viewer
  • Using full set of examples from nightly build: rerun.io/viewer
• The PR title and labels are set such as to maximize their usefulness for the next release's CHANGELOG
• If applicable, add a new check to the release checklist!
• If have noted any breaking changes to the log API in CHANGELOG.md and the migration guide

• PR Build Summary
• Recent benchmark results
• Wasm size tracking

To run all checks from main, comment on the PR with @rerun-bot full-check.

[Wumpf]

@rerun-bot full-check

[github-actions]

Deployed docs

Commit	Link
fdacc35	https://landing-5890zn2io-rerun.vercel.app/docs

[github-actions]

Started a full build: https://github.com/rerun-io/rerun/actions/runs/11029679431

[Wumpf]

auto formatter wanted those newlines to be gone, who am I to judge

[abey79]

Thanks for the clean-up—and for reminding me of the sorry state of our testing against python version 😅

[Wumpf]

reminding me of the sorry state of our testing against python version

aaaany time! ;)