test: remove duplicate cases

[G-Rath]

Checks

• [x] I have read the contributing guidelines.

Changes

• removed duplicate test cases

Context

ESLint v9 now errors about duplicate test cases, meaning these have to be either removed or made unique - all of the cases being removed in this pull request are flat out code duplicates hence their removal; there are still other duplicates that will need addressing, but they're a little more fuzzy so I will tackle them in another pull request.

(this helps reduce the diff for #926 and friends)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.32%. Comparing base (93a6ab9) to head (4753ea4). Report is 15 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #927      +/-   ##
==========================================
+ Coverage   96.23%   96.32%   +0.08%     
==========================================
  Files          44       44              
  Lines        2419     2449      +30     
  Branches     1000     1023      +23     
==========================================
+ Hits         2328     2359      +31     
+ Misses         91       90       -1     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[github-actions[bot]]

:tada: This PR is included in version 6.3.1 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: