deprecate v1 of Int4WeightOnlyConfig

[vkuzo]

Summary:

deprecate v1 of Int4WeightOnlyConfig and delete all callsites

Test Plan:

Reviewers:

Subscribers:

Tasks:

Tags:

[vkuzo]

Stack from ghstack (oldest at bottom):

• -> deprecate v1 of Int4WeightOnlyConfig #3513
• deprecate v1 of IntxWeightOnlyConfig #3512
• deprecate v1 of Int8DynamicActivationIntxWeightConfig #3511

[pytorch-bot]

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❌ 12 New Failures

As of commit e70fe7f with merge base 23a58c0 ():

NEW FAILURES - The following jobs have failed:

• Run 1xH100 Tests / test (H100, linux.aws.h100, --pre torch torchvision torchaudio fbgemm-gpu-genai --index-url https... / linux-job (gh)
  RuntimeError: Command docker exec -t 060ac93f0e3ae4b6fd16dd9f925a3e3e5a758e2af067530db01747ddbbe4632a /exec failed with exit code 2
• Run 1xL4 Tests / test (SM-89, linux.g6.4xlarge.experimental.nvidia.gpu, --pre torch --index-url https://download.p... / linux-job (gh)
  RuntimeError: Command docker exec -t 5d71d6b78a5c0d2f29f91f9af542e71a8790ba86a329ea5d810b7716c63f3063 /exec failed with exit code 2
• Run Regression Tests / test (CPU 2.6, linux.4xlarge, torch==2.6.0 --index-url https://download.pytorch.org/whl/cpu, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t 1af12c11c30a2a64bbd201cbe354c8c4126c2b8473e6fe42391d1132697ee437 /exec failed with exit code 2
• Run Regression Tests / test (CPU 2.7, linux.4xlarge, torch==2.7.1 --index-url https://download.pytorch.org/whl/cpu, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t 81b01b7edd7c084a128df83d506b0762f0640d2991c13a9ff668c7324d2a2506 /exec failed with exit code 2
• Run Regression Tests / test (CPU 2.8, linux.4xlarge, torch==2.8.0 --index-url https://download.pytorch.org/whl/cpu, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t 056b568287fce81d5cea2a3e527610808d63cad7a336f9454b4a097bd4e80f5d /exec failed with exit code 2
• Run Regression Tests / test (CPU 2.9, linux.4xlarge, torch==2.9.1 --index-url https://download.pytorch.org/whl/cpu, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t c0c2a7da4e390e447bb74ccfe98d8a715a699fb28f12fc3ddeb905a68a1474a5 /exec failed with exit code 2
• Run Regression Tests / test (CUDA 2.6, linux.g5.12xlarge.nvidia.gpu, torch==2.6.0, cuda, 12.6) / linux-job (gh)
  RuntimeError: Command docker exec -t 811f4ed5edb3f22eb782a17542a410842368fa53c6e1e47e66d4f7fe1ac60462 /exec failed with exit code 2
• Run Regression Tests / test (CUDA 2.7, linux.g5.12xlarge.nvidia.gpu, torch==2.7.1, cuda, 12.6) / linux-job (gh)
  RuntimeError: Command docker exec -t c0b43c775a56ea6aa9117d4e20e4ca381b9b75322d5f08cef621342bbcdb1f4d /exec failed with exit code 2
• Run Regression Tests / test (CUDA 2.8, linux.g5.12xlarge.nvidia.gpu, torch==2.8.0, cuda, 12.6) / linux-job (gh)
  RuntimeError: Command docker exec -t 8807ee21fd461f433cb1221baf803fa3dcd1b5bf9b468039440719df2d135288 /exec failed with exit code 2
• Run Regression Tests / test (CUDA 2.9, linux.g5.12xlarge.nvidia.gpu, torch==2.9.1, cuda, 12.6) / linux-job (gh)
  RuntimeError: Command docker exec -t 4374711709eb1f035cd907ae209c2da3506133db7c117af9e48fedcb4e58c5a9 /exec failed with exit code 2
• Run Regression Tests / test-nightly (CPU Nightly, linux.4xlarge, --pre torch --index-url https://download.pytorch.org/wh... / linux-job (gh)
  RuntimeError: Command docker exec -t 8cd4ca709b5986b39bc6334d8d8152cb117abcaab5d64f3d233eaf2407364835 /exec failed with exit code 2
• Run Regression Tests / test-nightly (CUDA Nightly, linux.g5.12xlarge.nvidia.gpu, --pre torch --index-url https://downloa... / linux-job (gh)
  RuntimeError: Command docker exec -t 46314a182e937d01e3127e5a37339fba3dce997fb8c5ee82542e12d236752aa4 /exec failed with exit code 2

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