Remove unused benchmark fixture

[chromy]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.77%. Comparing base (18c3482) to head (0d44198).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #416   +/-   ##
=======================================
  Coverage   79.77%   79.77%           
=======================================
  Files         147      147           
  Lines       11850    11850           
  Branches     1208     1208           
=======================================
  Hits         9453     9453           
  Misses       1962     1962           
  Partials      435      435           

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