Remove disused reference to distutils.debug

[koen-vg]

Distutils has been removed from the standard library in python 3.12. If you try to install powerplantmatching in a clean environment with python 3.12 right now, you get:

koen-uit-desktop · powerplantmatching > source .venv/bin/activate   
(.venv) koen-uit-desktop · powerplantmatching > pip install -e .      
[...]
(.venv) koen-uit-desktop · powerplantmatching > python              
Python 3.12.2 (main, Feb 21 2024, 00:00:00) [GCC 14.0.1 20240217 (Red Hat 14.0.1-0)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import powerplantmatching as pm
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/koen/Dokument/UiT/Research/Modelling/powerplantmatching/powerplantmatching/__init__.py", line 38, in <module>
    from . import core, data, heuristics, plot, utils
  File "/home/koen/Dokument/UiT/Research/Modelling/powerplantmatching/powerplantmatching/data.py", line 25, in <module>
    from distutils.log import debug
ModuleNotFoundError: No module named 'distutils'

No problem: the offending line of code is unnecessary anyway as the debug function is never used anywhere!

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Other

Checklist

• I have added a note to release notes doc/release_notes.rst.
• I have used pre-commit run --all to lint/format/check my contribution
• I have documented the effects of my code changes in the documentation doc/.
• I have adjusted the docstrings in the code appropriately.

[koen-vg]

A bit silly of me that I didn't submit this PR earlier cause I found the bug a little while ago; could have made it into 0.5.13. Oh well, next release.

[fneum]

No problem, I'll just do another one.