Remove unused S parameter

[blegat]

This gives warning when using the package

WARNING: method definition for set at /home/blegat/.julia/packages/MultiObjectiveAlgorithms/80Aze/src/MultiObjectiveAlgorithms.jl:348 declares type variable S but does not use it.
WARNING: method definition for set at /home/blegat/.julia/packages/MultiObjectiveAlgorithms/80Aze/src/MultiObjectiveAlgorithms.jl:372 declares type variable S but does not use it.

so it's worth doing a patch release with this fix

[codecov]

Codecov Report

Base: 95.89% // Head: 95.81% // Decreases project coverage by -0.09% ⚠️

Coverage data is based on head (d1b5902) compared to base (2d96a72).
Patch coverage: 93.33% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #48      +/-   ##
==========================================
- Coverage   95.89%   95.81%   -0.09%     
==========================================
  Files           8        8              
  Lines         731      740       +9     
==========================================
+ Hits          701      709       +8     
- Misses         30       31       +1     

Impacted Files	Coverage Δ
src/algorithms/Dichotomy.jl	98.03% <ø> (-0.04%)	⬇️
src/MultiObjectiveAlgorithms.jl	90.59% <90.90%> (-0.04%)	⬇️
src/algorithms/DominguezRios.jl	100.00% <100.00%> (ø)
src/algorithms/EpsilonConstraint.jl	96.66% <100.00%> (ø)
src/algorithms/KirlikSayin.jl	98.21% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.