Remove leftover code from previous commit

[bcapener]

Type of changes

• Bug fix
• New feature
• Documentation / docstrings
• Tests
• Other

Checklist

• I've run the latest black with default args on new code.
• I've updated CHANGELOG.md and CONTRIBUTORS.md where appropriate.
• I've added tests for new code.
• I accept that @willmcgugan may be pedantic in the code review.

Description

The screenshot below shows how the leftover code got missed on commit 092cfa4

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.24%. Comparing base (225cb07) to head (dab648c).
Report is 8 commits behind head on master.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3679   +/-   ##
=======================================
  Coverage   98.24%   98.24%           
=======================================
  Files          74       74           
  Lines        8105     8105           
=======================================
  Hits         7963     7963           
  Misses        142      142           

Flag	Coverage Δ
unittests	98.24% <100.00%> (ø)

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