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Rollup merge of #161464 - cyrgani:builtin_macros_clean, r=mati865

various cleanups of `rustc_builtin_macros`

Each commit should be reviewable on its own.
J
Jonathan Brouwer committed
9032e915ad085b6f3aaffe400e5960c881a44a23
Committed by GitHub <noreply@github.com> on 8/25/2026, 9:01:10 PM