chore: fix clippy lints

[wjones127]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 88.88889% with 1 line in your changes missing coverage. Please review.

Project coverage is 78.71%. Comparing base (aae351b) to head (57d14f4).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
rust/lance/src/dataset/scanner.rs	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3414      +/-   ##
==========================================
+ Coverage   78.69%   78.71%   +0.02%     
==========================================
  Files         250      250              
  Lines       90899    90927      +28     
  Branches    90899    90927      +28     
==========================================
+ Hits        71532    71577      +45     
+ Misses      16424    16400      -24     
- Partials     2943     2950       +7     

Flag	Coverage Δ
unittests	78.71% <88.88%> (+0.02%)	⬆️

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