[XLA] Delete unused code intended to handle auto layout in HLO.

openxla / xla

A machine learning compiler for GPUs, CPUs, and ML accelerators

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[XLA] Delete unused code intended to handle auto layout in HLO. #17940

Closed copybara-service[bot] closed 1 week ago

copybara-service[bot] commented 1 week ago

[XLA] Delete unused code intended to handle auto layout in HLO.

The code is related to frontend HLO attributes that were supposed to mirror MLIR attributes, but in the end they didn't end up being used and HLO paths (in places where AUTO layout is handled at all) use different method.

This is preparation for more changes that will fix AUTO layout handling in non-MLIR invocations of XLA.