Remove onnx dep

[Edoardo-Pedicillo]

Checklist:

• Reviewers confirm new code works as expected.
• Tests are passing.
• Coverage does not decrease.
• Documentation is updated.
• Compatibility with Qibo modules (Please edit this section if the current pull request is not compatible with the following branches).
  • Qibo: master
  • Qibolab: main
  • Qibolab_platforms_qrc: main

[alecandido]

qibocal/src/qibocal/fitting/classifier/scikit_utils.py

Line 4 in 6122a55

import onnxruntime as rt

?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.30%. Comparing base (5ff3d90) to head (d433967).
Report is 21 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1025      +/-   ##
==========================================
- Coverage   97.50%   97.30%   -0.21%     
==========================================
  Files         124      120       -4     
  Lines        9833     9747      -86     
==========================================
- Hits         9588     9484     -104     
- Misses        245      263      +18     

Flag	Coverage Δ
unittests	97.30% <100.00%> (-0.21%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/qibocal/fitting/classifier/run.py	97.47% <ø> (ø)
src/qibocal/protocols/classification.py	94.05% <ø> (-5.95%)	⬇️
src/qibocal/protocols/qutrit_classification.py	100.00% <100.00%> (+2.43%)	⬆️

... and 2 files with indirect coverage changes

[alecandido]

Do you remember why we have both a qubit and Qblox fit?

The Qblox fit seems the simpler version of the qubit one, which is also doing fewer things (but most likely could be simplified a bit anyhow).

I'm not asking to do anything in this PR, or urgently. But if it's redundant we may have an issue for their deduplication.

[Edoardo-Pedicillo]

Do you remember why we have both a qubit and Qblox fit?

It came out after a discussion with the lab people to benchmark with the qubit fit method. For sure we can remove it, I will open an issue

EDIT: #1030