remove fire_event_if_test

[emmyoop]

resolves #66

Description

Remove fire_event_if_test as it's no longer used.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• I have run changie new to create a changelog entry

[github-actions]

Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see the contributing guide.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (3f3c128) 52.21% compared to head (7e02a6b) 52.21%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #65   +/-   ##
=======================================
  Coverage   52.21%   52.21%           
=======================================
  Files          49       49           
  Lines        2863     2861    -2     
=======================================
- Hits         1495     1494    -1     
+ Misses       1368     1367    -1     

Flag	Coverage Δ
unit	52.21% <ø> (+<0.01%)	⬆️

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[emmyoop]

This is blocked on merging until all uses of this function have been removed.