Remove unused test variables

[johannaengland]

Just like #3028 and #3029 another part in adding F841 to ruff.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ PYTHON	black	992		0	13.02s
✅ PYTHON	ruff	988		0	0.1s

See detailed report in MegaLinter reports

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[github-actions]

Test results

    9 files      9 suites   8m 2s ⏱️
2 143 tests 2 143 ✅ 0 💤 0 ❌
4 025 runs  4 025 ✅ 0 💤 0 ❌

Results for commit fddb547.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.40%. Comparing base (480b586) to head (fddb547).
Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3033   +/-   ##
=======================================
  Coverage   60.40%   60.40%           
=======================================
  Files         605      605           
  Lines       43685    43685           
  Branches       48       48           
=======================================
  Hits        26388    26388           
  Misses      17285    17285           
  Partials       12       12           

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud