[clang] [llvm] [polly] [X86] Remove knl/knm specific ISAs supports (PR #92883)

[Freddy Ye via llvm-commits]

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@@ -1,373 +0,0 @@
-# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
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FreddyLeaf wrote:

[13a0f8d](https://github.com/llvm/llvm-project/pull/92883/commits/13a0f8d87343fd1a6380a66b7986ad1ce34b06fc)

https://github.com/llvm/llvm-project/pull/92883