Disable PyPy on Azure

[nicoddemus]

Disabling pypy2 and pypy3 for now on Azure so we can get green PRs again (#5279)

[nicoddemus]

Disabling pypy2 and pypy3 for now on Azure so we can get green PRs again (#5279)

[codecov]

Codecov Report

Merging #5274 into master will decrease coverage by 8.57%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5274      +/-   ##
==========================================
- Coverage   93.21%   84.64%   -8.58%     
==========================================
  Files         115      115              
  Lines       26163    26163              
  Branches     2578     2578              
==========================================
- Hits        24388    22145    -2243     
- Misses       1456     3633    +2177     
- Partials      319      385      +66

Impacted Files	Coverage Δ
testing/test_reports.py	10.49% <0%> (-89.51%)	⬇️
testing/test_unittest.py	24.43% <0%> (-74.67%)	⬇️
testing/test_runner_xunit.py	28.57% <0%> (-71.43%)	⬇️
testing/test_session.py	17.72% <0%> (-68.99%)	⬇️
testing/test_runner.py	34.7% <0%> (-61.18%)	⬇️
testing/test_pdb.py	47.25% <0%> (-51.57%)	⬇️
testing/test_argcomplete.py	20.28% <0%> (-47.83%)	⬇️
testing/test_resultlog.py	53.6% <0%> (-46.4%)	⬇️
src/_pytest/unittest.py	50.79% <0%> (-43.39%)	⬇️
src/_pytest/_argcomplete.py	33.33% <0%> (-41.67%)	⬇️
... and 42 more

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