remove tenure budget check on tenure extend

[rob-stacks]

Description

Applicable issues

• fixes #

Additional info (benefits, drawbacks, caveats)

Checklist

• [ ] Test coverage for new or modified code paths
• [ ] Changelog is updated
• [ ] Required documentation changes (e.g., docs/rpc/openapi.yaml and rpc-endpoints.md for v2 endpoints, event-dispatcher.md for new events)
• [ ] New clarity functions have corresponding PR in clarity-benchmarking repo

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[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

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[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 80.03%. Comparing base (9dfb1d1) to head (e63b8fb). :warning: Report is 131 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6622      +/-   ##
===========================================
+ Coverage    79.82%   80.03%   +0.21%     
===========================================
  Files          571      572       +1     
  Lines       351696   351746      +50     
===========================================
+ Hits        280724   281521     +797     
+ Misses       70972    70225     -747     

Files with missing lines	Coverage Δ
stacks-node/src/nakamoto_node/miner.rs	77.92% <ø> (-1.23%)	:arrow_down:

... and 73 files with indirect coverage changes

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