Remove old code for z-index sort

[efaulhaber]

No description provided.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.66%. Comparing base (17e8bd3) to head (77010b6).

❗ Current head 77010b6 differs from pull request most recent head 3776028. Consider uploading reports for the commit 3776028 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #3      +/-   ##
==========================================
+ Coverage   71.50%   75.66%   +4.16%     
==========================================
  Files           7        7              
  Lines         200      189      -11     
==========================================
  Hits          143      143              
+ Misses         57       46      -11     

Flag	Coverage Δ
unit	75.66% <ø> (+4.16%)	⬆️

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