Replace `abs_diff` helper with `usize::abs_diff`

fitzgen / bumpalo

A fast bump allocation arena for Rust

https://docs.rs/bumpalo

Apache License 2.0

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Closed Kmeakin closed 1 year ago

Kmeakin commented 1 year ago

The MSRV was updated to 1.60 by https://github.com/fitzgen/bumpalo/pull/196, so this helper function isn't needed anymore.