Remove deprecated functionality from smoke_test

[samanklesaria]

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[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/audio/4013

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❗ 1 Active SEVs

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• ghstack-mergeability-check and Check labels failing with 'Resource not accessible by integration'

❌ 8 New Failures

As of commit 79e0971 with merge base 6519052 ():

NEW FAILURES - The following jobs have failed:

• .github/workflows/bandit.yml (gh)
• .github/workflows/integration-test.yml (gh)
• .github/workflows/lint.yml (gh)
• .github/workflows/pr-labels.yml (gh)
• .github/workflows/unittest-macos-cpu.yml (gh)
• .github/workflows/unittest-windows-cpu.yml (gh)
• .github/workflows/unittest-windows-gpu.yml (gh)
• Build documentation / build / Build doc (gh)
  At least one of the pre-conditions you specified did not hold

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[NicolasHug]

Thanks for the PR, approving to unblock but please see comments below before merging

[NicolasHug]

Looks like the Windows wheel building jobs are failing with pytorch/audio/test/smoke_test/smoke_test_no_ffmpeg.py not found

I think it's because the scripts in pytorch/test-infra are still relying on it. Let's just put the file back (and forget about it forever)