prune data parallel

[Borda]

What does this PR do?

prune deprecated data parallel

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[codecov]

Codecov Report

Merging #7510 (b2920e1) into master (d4ec751) will increase coverage by 0%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #7510    +/-   ##
=======================================
  Coverage      92%     92%            
=======================================
  Files         198     198            
  Lines       12843   13042   +199     
=======================================
+ Hits        11839   12024   +185     
- Misses       1004    1018    +14     

[awaelchli]

does it need a chlog entry?

[Borda]

does it need a chlog entry?

I was not sure how to describe it :D
just removing these classes or would you suggest something more?

[awaelchli]

what you added as description is perfect!