Revert "Arm backend: Enable pytest VKML op unit testing in ciflow/trunk"

[zingo]

Reverts #14109

This caused timeout on arm ops unit tests

cc @freddan80 @per @oscarandersson8218 @digantdesai

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/15841

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❌ 7 New Failures, 2 Unrelated Failures

As of commit ffa68b3 with merge base f4a9268 ():

NEW FAILURES - The following jobs have failed:

• pull / test-multimodal-linux (gemma3-4b) / linux-job (gh)
  RuntimeError: Command docker exec -t 15449cfc38d7a75bd589dbb71e969903031b775b257fae956655d098919dcc7a /exec failed with exit code 139
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-large-v3-turbo, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t 0261e3689d1c9865170861b58d485905d525cf9c00de3fd78d34adc8f6583483 /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-large-v3-turbo, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t 6e4b2959456d74c1cb6b7ba551f4d502fe29d1dcf703af327bf2349a896ec67f /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-large-v3-turbo, quantized-int4-weight-only) / linux-job (gh)
  RuntimeError: Command docker exec -t 0bddc68b7103948a818aa19b115ac957362719e103bfbaade4f8c6f3bd8e9433 /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-small, non-quantized) / linux-job (gh)
  RuntimeError: Command docker exec -t 53052adf4662fb91f4d5e6900c44289585d1e66b969a285ec17f1e49a2746d36 /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-small, quantized-int4-tile-packed) / linux-job (gh)
  RuntimeError: Command docker exec -t 1f2e2043b779419ba84b1fd6c051d46a59c0c21782b89c64058f5421853f65ab /exec failed with exit code 1
• Test CUDA Builds / test-model-cuda-e2e (openai, whisper-small, quantized-int4-weight-only) / linux-job (gh)
  RuntimeError: Command docker exec -t df0180e47f18216953c55a9d9e87d2a383a6d739b53eacc9e7b8c5bdfb535d54 /exec failed with exit code 1

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Test Metal Backend / test-model-metal-e2e (openai, whisper-large-v3-turbo, non-quantized) / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• Test Metal Backend / test-model-metal-e2e (openai, whisper-small, non-quantized) / macos-job (gh) (trunk failure)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

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[zingo]

Fails unrelated