[MNT] improve doc generation and remove dead code

[Remi-Gau]

No description provided.

[codecov]

Codecov Report

Merging #790 (13a0189) into main (3a47942) will increase coverage by 2.24%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #790      +/-   ##
==========================================
+ Coverage   75.56%   77.80%   +2.24%     
==========================================
  Files         218      217       -1     
  Lines        5771     5750      -21     
==========================================
+ Hits         4361     4474     +113     
+ Misses       1410     1276     -134     

Flag	Coverage Δ
matlab	77.80% <100.00%> (?)
octave	?

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

Impacted Files	Coverage Δ
src/infra/getEnvInfo.m	69.11% <100.00%> (+7.35%)	⬆️
src/reports/copyFigures.m	87.50% <0.00%> (-12.50%)	⬇️
src/infra/checkToolbox.m	80.00% <0.00%> (-10.00%)	⬇️
src/defaults/checkOptions.m	96.36% <0.00%> (+1.81%)	⬆️
src/workflows/stats/bidsResults.m	46.11% <0.00%> (+1.82%)	⬆️
src/subject_level/specifyContrasts.m	89.23% <0.00%> (+3.84%)	⬆️
src/workflows/stats/bidsFFX.m	76.71% <0.00%> (+6.84%)	⬆️
src/IO/getData.m	94.11% <0.00%> (+8.82%)	⬆️
src/reports/copyGraphWindownOutput.m	85.00% <0.00%> (+10.00%)	⬆️
... and 12 more

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