remove android and iOS builds from CI

[pmeier]

The android and iOS builds have been unmaintained for a long time now. As discussed in the latest Nova sync, there is no need to keep CI jobs running and we can kill them.

This PR also purges all android and iOS functionality and mentions from the repository. I don't see why we want to keep it if we not even have CI running for it, but no strong opinion. Happy to revert if needed.

cc @seemethere

[pytorch-bot]

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❌ 22 New Failures, 1 Unrelated Failure

As of commit acf09e7:

NEW FAILURES - The following jobs have failed:

• Build Windows Conda (gh)
• python-source-and-configs / linux-job (gh)
• pytorch/vision / manywheel-py3_8-cuda11_7 (gh)
• pytorch/vision / manywheel-py3_8-rocm5_3 (gh)
• pytorch/vision / wheel-py3_8-cuda11_7 (gh)
• unittests (3.10, linux.12xlarge, cpu) / linux-job (gh)
• unittests (3.10, windows.4xlarge, cpu) / windows-job (gh)
• unittests (3.11, linux.12xlarge, cpu) / linux-job (gh)
• unittests (3.11, macos-12) / macos-job (gh)
• unittests (3.11, windows.4xlarge, cpu) / windows-job (gh)
• unittests (3.8, linux.12xlarge, cpu) / linux-job (gh)
• unittests (3.8, linux.g5.4xlarge.nvidia.gpu, cuda, 11.7) / linux-job (gh)
• unittests (3.8, windows.4xlarge, cpu) / windows-job (gh)
• unittests (3.9, linux.12xlarge, cpu) / linux-job (gh)
• unittests (3.9, macos-12) / macos-job (gh)
• unittests (3.9, windows.4xlarge, cpu) / windows-job (gh)
• unittests-extended / linux-job (gh)
• unittests-prototype (3.10, linux.12xlarge, cpu) / linux-job (gh)
• unittests-prototype (3.11, linux.12xlarge, cpu) / linux-job (gh)
• unittests-prototype (3.8, linux.12xlarge, cpu) / linux-job (gh)
• unittests-prototype (3.8, linux.g5.4xlarge.nvidia.gpu, cuda, 11.7) / linux-job (gh)
• unittests-prototype (3.9, linux.12xlarge, cpu) / linux-job (gh)

BROKEN TRUNK - The following job failed but were present on the merge base 8fa3aa5:

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

• unittests (3.8, windows.g5.4xlarge.nvidia.gpu, cuda, 11.7) / windows-job (gh)

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[seemethere]

LGTM thanks for the quick turnaround on this!

[pmeier]

C source lint failure is valid. The rest is bogus.

[NicolasHug]

Assuming we're OK to stop support for the iOS and Android demos (I'm confirming with PMs internally so please don't merge anything until we have confirmation):

This PR also purges all android and iOS functionality and mentions from the repository. I don't see why we want to keep it if we not even have CI running for it, but no strong opinion

I think we could keep them around, with a clear statement in the README(s) that these are completely unmaintained / out of date. They might still be useful externally and they should be fairly easy for users to make them work. So far we only had to update gradle versions and stuff like that - so userwho know what they're doing should be able to get it to work.

[NicolasHug]

I confirmed with product team that:

• it's OK to remove the CI jobs
• it's OK to deprecate and stop support of the demos
• it's preferable to keep the android and ios folders around, with a note about their deprecated / unmaintained status

[pmeier]

For completion

So far we only had to update gradle versions and stuff like that

is not the full story. It is right that we needed to only do that, but we were heavily relying on the CircleCI image for Android builds. This is no longer available through Nova. In #7410 I sunk significant time into getting it to work. Ultimately I did, but I don't know if the build is correct or even works.

[NicolasHug]

Thanks Philip

[github-actions]

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