Remove Android LlamaDemo

[kirklandsign]

Has her new home https://github.com/meta-pytorch/executorch-examples/tree/main/llm/android/LlamaDemo

[pytorch-bot]

🔗 Helpful Links

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❌ 1 New Failure

As of commit ce1cdf9 with merge base 07d1092 ():

NEW FAILURE - The following job has failed:

• pull / test-samsung-models-linux / linux-job (gh)
  RuntimeError: Command docker exec -t a554bb0a173eb6c27d171abf1d04353598cbe509684a25699f373c75c54a7cbb /exec failed with exit code 1

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@kirklandsign has imported this pull request. If you are a Meta employee, you can view this in D82868456.

[lucylq]

Thanks @kirklandsign !