Remove support for deprecated metadata/sbom generation - #46

You are using macOS on Intel x86_64. We do not provide support for this platform (as-of September 2026, announced August 2025). Apple have dropped Intel x86_64 support in macOS Golden Gate (27). GitHub Actions are dropping macOS Intel x86_64 runners in 2027. Homebrew is a non-profit project run entirely by volunteers, not employees. If the biggest companies in the world cannot support macOS Intel x86_64 any longer, sadly neither can we. Homebrew no longer builds bottles for this configuration. Existing bottles may still work, but updated formulae may build from source.