pylint cleanup quad

[mmahsereci]

In a Nutshell

This PR gets rid of some disabled pylint configurations in quad packages. These are

• else-if-used
• missing-function-docstring
• line-too-long
• missing-raises-doc
• function-redefined

Detailed Description

n/a

Related Issues

related to #523

[codecov]

Codecov Report

Merging #610 (35f0d61) into main (3ae7949) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #610   +/-   ##
=======================================
  Coverage   89.39%   89.39%           
=======================================
  Files         181      181           
  Lines        6677     6678    +1     
  Branches     1026     1026           
=======================================
+ Hits         5969     5970    +1     
  Misses        479      479           
  Partials      229      229           

Impacted Files	Coverage Δ
...c/probnum/quad/kernel_embeddings/_expquad_gauss.py	100.00% <ø> (ø)
...robnum/quad/kernel_embeddings/_expquad_lebesgue.py	100.00% <ø> (ø)
src/probnum/quad/solvers/bayesian_quadrature.py	86.58% <ø> (ø)
...bnum/quad/solvers/belief_updates/_belief_update.py	96.96% <ø> (ø)
src/probnum/quad/solvers/bq_state.py	100.00% <ø> (ø)
src/probnum/quad/solvers/policies/_policy.py	100.00% <ø> (ø)
...olvers/stopping_criteria/_bq_stopping_criterion.py	100.00% <ø> (ø)
...quad/solvers/stopping_criteria/_rel_mean_change.py	70.00% <ø> (ø)
src/probnum/quad/_bayesquad.py	94.11% <100.00%> (+0.17%)	⬆️
...robnum/quad/kernel_embeddings/_kernel_embedding.py	91.30% <100.00%> (ø)

[mmahsereci]

@marvinpfoertner I hope this is somewhat complete for quad. There are 3 pylint messages still disabled but it does not make sense to resolve these now. They are:

• too-many-arguments (limit will be raised Long-term global `pylint` ignores #470 )
• missing-module-docstring (can be done along with resolving BQ API references could be more user friendly #574 )
• missing-return-doc (problem with sphinx and type hints rendering Long-term global `pylint` ignores #470 )
• missing-yield-doc (same as above)

[marvinpfoertner]

👍🏻