dont enable cross-compile feature

[0xbe7a]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

Maturin uses cargo-xwin by default when compiling from Linux to x86_64_pc_windows_msvc. cargo-xwin then uses a vendored windows-sdk and clang toolchain and modifies the env to set up cross-compilation. This PR disables this feature so we can set up the x86_64_pc_windows_msvc target inside https://github.com/conda-forge/rust-activation-feedstock in general. This feature is only used when compiling from Mac for Windows, which as far as I can tell, no other feedstock currently does.

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[messense]

LGTM, note that this will also disable zig cross compiling support.

[0xbe7a]

It looks like there are no downstream users of the zig feature on conga-forge either. I can re-enable it, however cargo-zigbuild also makes a lot of changes to your build environment and I would rather enable proper support later if the need arises and disable it for now.

[messense]

would rather enable proper support later if the need arises and disable it for now.

Sounds good to me.