chore(code): Remove the time limit related code

[ancazamfir]

Closes: #XXX

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PR author checklist

For all contributors

• Reference a GitHub issue
• Ensure the PR title follows the conventional commits spec
• Add a release note in RELEASE_NOTES.md if the change warrants it
• Add an entry in BREAKING_CHANGES.md if the change warrants it

For external contributors

• Maintainers of Malachite are allowed to push changes to the branch

[codecov]

Codecov Report

Attention: Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.

Project coverage is 76.99%. Comparing base (8da04a4) to head (7b51497).
Report is 2 commits behind head on romac/remove-vote-set.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@                    Coverage Diff                    @@
##           romac/remove-vote-set    #1037      +/-   ##
=========================================================
+ Coverage                  76.79%   76.99%   +0.21%     
=========================================================
  Files                        157      156       -1     
  Lines                      16119    16044      -75     
  Branches                   16119    16044      -75     
=========================================================
- Hits                       12377    12353      -24     
+ Misses                      2905     2857      -48     
+ Partials                     837      834       -3     

Flag	Coverage Δ
integration	76.79% <81.82%> (+0.21%)	⬆️
mbt	8.37% <0.00%> (+0.05%)	⬆️

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[romac]

This should be 7

[romac]

Fixed in #1008