Remove matlab leftovers

[dweindl]

Remove some more matlab leftovers.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.66%. Comparing base (4e223a0) to head (8b8a2d2).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3142      +/-   ##
==========================================
- Coverage   77.35%   76.66%   -0.69%     
==========================================
  Files         318      318              
  Lines       20631    20631              
  Branches     1483     1483              
==========================================
- Hits        15959    15817     -142     
- Misses       4664     4806     +142     
  Partials        8        8              

Flag	Coverage Δ
cpp	70.39% <ø> (-0.05%)	⬇️
cpp_python	37.80% <ø> (ø)
petab	47.16% <ø> (ø)
python	68.85% <ø> (-0.05%)	⬇️
sbmlsuite-jax	?

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

Files with missing lines	Coverage Δ
include/amici/model_state.h	100.00% <ø> (ø)
python/sdist/amici/_symbolic/de_model.py	91.68% <ø> (ø)

... and 5 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.