GEOPY-2032: Cleanup constant files and data classes

[domfournier]

GEOPY-2032 - Cleanup constant files and data classes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.91%. Comparing base (8a0cc67) to head (27e50e7).
Report is 6 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #153      +/-   ##
===========================================
+ Coverage    86.48%   88.91%   +2.43%     
===========================================
  Files           88       76      -12     
  Lines         4018     3916     -102     
  Branches       546      546              
===========================================
+ Hits          3475     3482       +7     
+ Misses         411      302     -109     
  Partials       132      132              

Files with missing lines	Coverage Δ
...peg_drivers/electromagnetics/time_domain/params.py	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes