test_ops: skipTest only takes a single argument

[t-vi]

Fixes a broken skipTest from #43451, e.g. in the ROCm CI.

[dr-ci]

💊 CI failures summary and remediations

As of commit e9cd237 (more details on the Dr. CI page):

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• 1/1 failures possibly* introduced in this PR
  • 1/1 non-CircleCI failure(s)

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ci.pytorch.org: 1 failed

• Failed: pr/pytorch-linux-bionic-rocm3.7-py3.6

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This comment has been revised 5 times.

[t-vi]

Hmhm. doesn't completely fix this, though.

[facebook-github-bot]

@malfet has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[facebook-github-bot]

@malfet merged this pull request in 7c61f57.

[t-vi]

@malfet Thank you! I wasn't sure whether we'd use f-strings, but they sure are nice here. Thank you for fixing this, too.

[malfet]

@t-vi Since 1.6 release, PyTorch can use any feature present in Python-3.6