Rollup merge of #118083 - calebzulawski:remove-i686-apple-darwin, r=albertlarsan68

Remove i686-apple-darwin cross-testing

The Xcode SDK no longer ships with 32-bit Intel (i686-apple-darwin) support as of [Xcode 14](https://developer.apple.com/news/upcoming-requirements/?id=06062022a) (related, #112753).  On an up-to-date Intel Mac, `x.py test --bless` fails.

r? ``@rust-lang/bootstrap``
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Nilstrieb 2023-11-21 14:36:14 +01:00 committed by GitHub
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@ -49,9 +49,9 @@ const MIR_OPT_BLESS_TARGET_MAPPING: &[(&str, &str)] = &[
("i686-unknown-linux-musl", "x86_64-unknown-linux-musl"),
("i686-pc-windows-msvc", "x86_64-pc-windows-msvc"),
("i686-pc-windows-gnu", "x86_64-pc-windows-gnu"),
("i686-apple-darwin", "x86_64-apple-darwin"),
// ARM Macs don't have a corresponding 32-bit target that they can (easily)
// build for, so there is no entry for "aarch64-apple-darwin" here.
// Likewise, i686 for macOS is no longer possible to build.
];
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]