remove the slow path(NCHW) for avg_pool3d

[lly-zero-one]

Summary: Use the fast path for NCHW input tensor

Test Plan: run the pool unit tests

Differential Revision: D20522082

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D20522082

[dskhudia]

LGTM! Please make sure the tests pass.

[dr-ci]

💊 CircleCI build failures summary and remediations

As of commit 1fbdcd8 (more details on the Dr. CI page):

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✅ None of the build failures appear to be your fault 💚

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• 5/5 broken upstream at merge base c8f665d since Mar 19

  Please rebase on the viable/strict branch (expand for instructions)

  If your commit is newer than viable/strict, you can try basing on an older, stable commit:

  git fetch https://github.com/pytorch/pytorch viable/strict
  git rebase --onto FETCH_HEAD $(git merge-base origin/master HEAD)
  

  If your commit is older than viable/strict:

  git fetch https://github.com/pytorch/pytorch viable/strict
  git rebase FETCH_HEAD
  

  Check out the recency history of this "viable master" tracking branch.

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🚧 5 upstream failures:

These were probably caused by upstream breakages:

• pytorch_windows_vs2019_py36_cuda10.1_build since Mar 19
• pytorch_linux_xenial_py3_6_gcc5_4_test since Mar 19
• pytorch_macos_10_13_py3_test since Mar 19
• pytorch_linux_xenial_cuda10_2_cudnn7_py3_gcc7_test since Mar 19
• pytorch_linux_xenial_py3_clang5_asan_test since Mar 19

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This comment has been revised 9 times.

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D20522082

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D20522082

[facebook-github-bot]

This pull request has been merged in fd57e09.