Remove sed from windows test workflow

[yunzheng]

No description provided.

[Schamper]

@pyrco IIRC this sed was only important for publishing to PyPI to get rid of the commit hashes, right? So it should be fine to remove it from these tests?

[codecov]

Codecov Report

Merging #82 (5442cd1) into main (8a1c74f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #82   +/-   ##
=======================================
  Coverage   79.16%   79.16%           
=======================================
  Files          32       32           
  Lines        2894     2894           
=======================================
  Hits         2291     2291           
  Misses        603      603           

Flag	Coverage Δ
unittests	79.16% <ø> (ø)

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[pyrco]

@pyrco IIRC this sed was only important for publishing to PyPI to get rid of the commit hashes, right? So it should be fine to remove it from these tests?

yes