Revert "Add (and fix) OSS check that et_operator_library dtype_select…

[JacobSzwejbka]

…ive_build builds (#9245)"

This reverts commit 7933ac9.

Summary

[PLEASE REMOVE] See CONTRIBUTING.md's Pull Requests for ExecuTorch PR guidelines.

[PLEASE REMOVE] If this PR closes an issue, please add a Fixes #<issue-id> line.

[PLEASE REMOVE] If this PR introduces a fix or feature that should be the upcoming release notes, please add a "Release notes: " label. For a list of available release notes labels, check out CONTRIBUTING.md's Pull Requests.

Test plan

[PLEASE REMOVE] How did you test this PR? Please write down any manual commands you used and note down tests that you have written if applicable.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/11571

• 📄 Preview Python docs built from this PR

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❌ 3 New Failures

As of commit 7db717a with merge base d719e8e ():

NEW FAILURES - The following jobs have failed:

• Build Linux Wheels / pytorch/executorch / build-manywheel-py3_10-cpu (gh)
  Process completed with exit code 254.
• trunk / test-llama-runner-mac (fp32, coreml) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• trunk / unittest-nxp-neutron / linux-job (gh)
  RuntimeError: Command docker exec -t 483564e5f5ff829d51c02e221e45c0bbe8aa028f02d36015187a7d3079061909 /exec failed with exit code 1

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[swolchok]

sorry, will re-send as exported PR