remove params_report attribute

[aloctavodia]

We no longer need to make a difference between params and params_report

[codecov-commenter]

Codecov Report

Merging #153 (0dd7b4f) into main (8f15e42) will decrease coverage by 0.00%.
The diff coverage is 55.55%.

@@            Coverage Diff             @@
##             main     #153      +/-   ##
==========================================
- Coverage   75.94%   75.94%   -0.01%     
==========================================
  Files          18       18              
  Lines        2241     2224      -17     
==========================================
- Hits         1702     1689      -13     
+ Misses        539      535       -4     

Impacted Files	Coverage Δ
preliz/distributions/distributions.py	62.32% <0.00%> (+0.64%)	⬆️
preliz/distributions/continuous.py	93.62% <57.14%> (-0.05%)	⬇️
preliz/distributions/discrete.py	99.40% <100.00%> (-0.01%)	⬇️

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