pytester: remove unused winpymap

[blueyed]

Follow-up to c86d2da.

[codecov]

Codecov Report

Merging #5343 into features will decrease coverage by 5.16%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           features    #5343      +/-   ##
============================================
- Coverage     93.59%   88.42%   -5.17%     
============================================
  Files           115      115              
  Lines         26307    26306       -1     
  Branches       2600     2600              
============================================
- Hits          24622    23262    -1360     
- Misses         1377     2716    +1339     
- Partials        308      328      +20

Impacted Files	Coverage Δ
src/_pytest/pytester.py	84.68% <ø> (-1.44%)	⬇️
testing/test_reports.py	10.49% <0%> (-89.51%)	⬇️
testing/logging/test_reporting.py	21.03% <0%> (-78.97%)	⬇️
testing/test_runner_xunit.py	29.82% <0%> (-70.18%)	⬇️
testing/examples/test_issue519.py	33.33% <0%> (-66.67%)	⬇️
testing/test_runner.py	34.7% <0%> (-61.61%)	⬇️
testing/test_resultlog.py	53.6% <0%> (-46.4%)	⬇️
src/_pytest/reports.py	68.96% <0%> (-26.11%)	⬇️
testing/python/fixtures.py	73.53% <0%> (-24.98%)	⬇️
testing/test_warnings.py	26.77% <0%> (-21.86%)	⬇️
... and 22 more

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[blueyed]

Also here pypy3-xdist was ok.

[nicoddemus]

Also here pypy3-xdist was ok.

🤔

I wonder if features pypy3 is fine, only failing on master.

If this is the case, I would just go ahead and release 4.6, because afterwards we will merge features into master and the problem goes away. 😅

[blueyed]

I wonder if features pypy3 is fine, only failing on master.

No, it started failing on features - but now appears to be OK again?!
Have not investigated (i.e. not checked new commits to features really), but from this morning it looked like something else might have caused it (e.g. load on Travis?!).