remove drop_duplicates step from DC

[nikml]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 90.90909% with 2 lines in your changes missing coverage. Please review.

Project coverage is 76.96%. Comparing base (8bffbcd) to head (3aaed3d).

Files	Patch %	Lines
...drift/multivariate/domain_classifier/calculator.py	90.90%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #402      +/-   ##
==========================================
- Coverage   76.98%   76.96%   -0.02%     
==========================================
  Files         108      108              
  Lines        9267     9270       +3     
  Branches     1656     1659       +3     
==========================================
+ Hits         7134     7135       +1     
- Misses       1674     1675       +1     
- Partials      459      460       +1     

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