Remove conda workflows and packaging scripts

[atalman]

Related to: pytorch/pytorch#138506
cc @NicolasHug

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/vision/8890

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❌ 5 New Failures

As of commit 037cb8b with merge base 0d68c7d ():

NEW FAILURES - The following jobs have failed:

• Tests / unittests-linux (3.10, linux.12xlarge, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t c622e1da87b247ee33048f344e01c5243293a10fc1e263db88ab7bc1298e30d2 /exec failed with exit code 1
• Tests / unittests-linux (3.11, linux.12xlarge, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t 7ba180e4c32731fc47f4614bdb0a3e0d0e221bc3a0daccc3641aaf498cfe2d98 /exec failed with exit code 1
• Tests / unittests-linux (3.12, linux.12xlarge, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t b3750ccf3d7fe6a50345bc4e2719b6322b3d82b07f572391eb35b756066a2f2a /exec failed with exit code 1
• Tests / unittests-linux (3.9, linux.12xlarge, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t a93e5ae1899d88b9a74a24e29e795a9cb4997a280358e283c12e437bcb40d906 /exec failed with exit code 1
• Tests / unittests-windows (3.9, windows.g5.4xlarge.nvidia.gpu, cuda, 11.8) / windows-job (gh)
  AttributeError: '_OpNamespace' 'image' object has no attribute '_jpeg_version'

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[github-actions]

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