[ET-VK][DCE] Remove redundant quantized linear implementations

[SS-JIA]

Stack from ghstack (oldest at bottom):

• -> [ET-VK][DCE] Remove redundant quantized linear implementations #14151
• [ET-VK] Misc code cleanup to recent Quantized Linear + SDPA implementations #14150

As title. With the recent support added for dynamically quantized + weight only quantized int4 and int8 linear, which are consolidated under QuantizedLinear.cpp, the operators implemented in QuantizedLinearQGANW.cpp and QuantizedLinear_QTA8A_QGA4W.cpp are no longer required.

This diff removes all code related to the operators implemented in those files, namely:

• et_vk.linear_weight_int4.default
• et_vk.linear_qta8a_qga4w.default

AOT export logic needed to support those ops are also removed.

Differential Revision: D82120824

[pytorch-bot]

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❌ 1 New Failure, 42 Unrelated Failures

As of commit a63a9b4 with merge base 598ba46 ():

NEW FAILURE - The following job has failed:

• trunk / test-arm-backend (test_pytest_ops_ethosu_fvp) / linux-job (gh)
  RuntimeError: Command docker exec -t 5d20dd0cfbd016c3a258b32a23b410085b8473fd65c8b34a92a71e6a5cb87fa8 /exec failed with exit code 1

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• pull / test-samsung-models-linux / linux-job (gh) (similar failure)
• pull / unittest / macos / macos-job (gh) (similar failure)
• pull / unittest-buck / macos / macos-job (gh) (similar failure)
• pull / unittest-editable / macos / macos-job (gh) (similar failure)
• trunk / test-custom-ops-macos (cmake) / macos-job (gh) (similar failure)
• trunk / test-llama-runner-mac (fp32, coreml) / macos-job (gh) (similar failure)
• trunk / test-llama-runner-mac (fp32, mps) / macos-job (gh) (similar failure)
• trunk / test-llama-runner-mac (fp32, xnnpack+custom+quantize_kv) / macos-job (gh) (similar failure)
• trunk / test-llama-torchao-lowbit / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (dl3) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (edsr) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (efficient_sam) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (emformer_join) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (emformer_transcribe) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (ic3) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (ic4) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (mobilebert) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (mv2) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (mv3) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (resnet50) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (vit) / macos-job (gh) (similar failure)
• trunk / test-models-macos-coreml (w2l) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (efficient_sam, portable) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (emformer_join, xnnpack-quantization-delegation) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (ic4, xnnpack-quantization-delegation) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (llama, portable) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (llama2, xnnpack-quantization-delegation) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (llama3_2_vision_encoder, portable) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (mobilebert, xnnpack-quantization-delegation) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (mv3, portable) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (mv3, xnnpack-quantization-delegation) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (resnet50, xnnpack-quantization-delegation) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (vit, xnnpack-quantization-delegation) / macos-job (gh) (similar failure)
• trunk / test-models-macos-cpu (w2l, xnnpack-quantization-delegation) / macos-job (gh) (similar failure)
• trunk / test-models-macos-mps / macos-job (gh) (similar failure)
• trunk / test-selective-build-macos (cmake) / macos-job (gh) (similar failure)
• trunk / test-static-llama-ane / macos-job (gh) (similar failure)
• trunk / unittest-release / macos / macos-job (gh) (similar failure)

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

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

• pull / test-binary-size-linux-gcc / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / test-moshi-linux / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / test-openvino-linux / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• pull / test-setup-linux-gcc / linux-job (gh) (trunk failure)

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[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D82120824

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D82120824