llvm-project

c4181e51 - [MLIR][Python] remove unnecessary `arg.none() = nb::none()` pattern (#157519)

[MLIR][Python] remove unnecessary `arg.none() = nb::none()` pattern (#157519) We have `arg.none() = nb::none()` in a lot of places but this is no longer necessary (as of ~[2022](https://github.com/wjakob/nanobind/commit/62a23bb87b57d939e045f9c9da78a1d7235d2271)).