maint: remove setup.py

[steven-murray]

Simply removes setup.py since we don't need it

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.95%. Comparing base (fd54572) to head (a4a2694).
Report is 65 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (fd54572) and HEAD (a4a2694). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (fd54572)	HEAD (a4a2694)
unittests	7	6

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #85       +/-   ##
===========================================
- Coverage   99.46%   63.95%   -35.52%     
===========================================
  Files           8        8               
  Lines         566      566               
  Branches       88       88               
===========================================
- Hits          563      362      -201     
- Misses          1      196      +195     
- Partials        2        8        +6     

Flag	Coverage Δ
unittests	63.95% <ø> (-35.16%)	⬇️

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