Remove var_mean xfails | fix(torchlib)

[justinchuby]

https://github.com/microsoft/onnx-converters-private/issues/189

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (57fa921) 78.65% compared to head (8b93e81) 78.57%.
Report is 1 commits behind head on main.

❗ Current head 8b93e81 differs from pull request most recent head 20ff178. Consider uploading reports for the commit 20ff178 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1165      +/-   ##
==========================================
- Coverage   78.65%   78.57%   -0.08%     
==========================================
  Files         118      118              
  Lines       15323    15154     -169     
  Branches     2388     1620     -768     
==========================================
- Hits        12052    11908     -144     
+ Misses       2875     2869       -6     
+ Partials      396      377      -19     

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[github-actions]

Test Results

         24 files         24 suites   1h 36m 46s ⏱️
  11 212 tests   8 356 ✔️     2 856 💤 0 ❌
254 529 runs  56 811 ✔️ 197 718 💤 0 ❌

Results for commit 20ff178.

♻️ This comment has been updated with latest results.