fix: remove FailStep from pipelines

[metrizable]

Issue #, if available:

Description of changes:

remove unsupported FailStep

Testing done:

❯ tox --parallel 3 -- -rfE --disable-warnings tests/unit
✔ OK flake8 in 35.836 seconds
✔ OK black-format in 46.193 seconds
✔ OK pylint in 53.496 seconds
✔ OK docstyle in 36.988 seconds
✔ OK doc8 in 34.241 seconds
✔ OK twine in 42.776 seconds
✔ OK sphinx in 3 minutes, 31.701 seconds
✔ OK py36 in 9 minutes, 32.944 seconds
✔ OK py37 in 9 minutes, 32.309 seconds
✔ OK py38 in 7 minutes, 54.123 seconds

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[sagemaker-bot]

AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-unit-tests
• Commit ID: 8881aa8
• Result: SUCCEEDED
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AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-notebook-tests
• Commit ID: 8881aa8
• Result: SUCCEEDED
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AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-slow-tests
• Commit ID: 8881aa8
• Result: SUCCEEDED
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AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-local-mode-tests
• Commit ID: 8881aa8
• Result: SUCCEEDED
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AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-unit-tests
• Commit ID: 8d8500c
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-slow-tests
• Commit ID: 8d8500c
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-notebook-tests
• Commit ID: 8d8500c
• Result: FAILED
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AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-local-mode-tests
• Commit ID: 8d8500c
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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AWS CodeBuild CI Report

• CodeBuild project: sagemaker-python-sdk-pr
• Commit ID: 8d8500c
• Result: SUCCEEDED
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