chore: remove unused code

[rjsparks]

No description provided.

[codecov]

Codecov Report

Attention: 63 lines in your changes are missing coverage. Please review.

Comparison is base (b38e8c3) 88.80% compared to head (6ac196b) 88.77%.
Report is 7 commits behind head on main.

Files	Patch %	Lines
ietf/review/tasks.py	0.00%	26 Missing ⚠️
ietf/utils/tasks.py	0.00%	16 Missing ⚠️
ietf/sync/tasks.py	64.70%	12 Missing ⚠️
ietf/sync/rfceditor.py	16.66%	5 Missing ⚠️
ietf/stats/tasks.py	85.71%	2 Missing ⚠️
ietf/stats/utils.py	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6963      +/-   ##
==========================================
- Coverage   88.80%   88.77%   -0.04%     
==========================================
  Files         285      289       +4     
  Lines       40383    40429      +46     
==========================================
+ Hits        35862    35890      +28     
- Misses       4521     4539      +18     

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