[Draft] Revert partial "Implement SPV_INTEL_bfloat16_arithmetic (#3290)"

[whitneywhtsang]

This draft PR addresses a current issue with Intel Triton. We kindly request that you refrain from closing it at this time. We will close the PR once the Intel Rolling driver, as detailed at https://dgpu-docs.intel.com/driver/installation-rolling.html, is updated to incorporate the SPIRV translator with the SPV_INTEL_bfloat16_arithmetic extension.

This reverts commit 8242eb7.

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