Fix "unused import" warning on Windows

[cakebaker]

This PR fixes an "unused import" warning on Windows I noticed while looking at the "Code coverage" jobs (see https://github.com/uutils/diffutils/actions/runs/11737056572/job/32697251902#step:8:87).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.97%. Comparing base (3101aa1) to head (4f2f869).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #105   +/-   ##
=======================================
  Coverage   84.97%   84.97%           
=======================================
  Files          12       12           
  Lines        5829     5829           
  Branches      475      475           
=======================================
  Hits         4953     4953           
  Misses        861      861           
  Partials       15       15           

Flag	Coverage Δ
macos_latest	84.93% <ø> (ø)
ubuntu_latest	85.17% <ø> (ø)
windows_latest	22.95% <ø> (ø)

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