remove curl.exe from libcurl

[hmaarrfk]

Fixes #78
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.

[conda-forge-linter]

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.

[hmaarrfk]

@conda-forge-admin please rerender

[hmaarrfk]

The clobber warning is indeeded gone:

New: https://dev.azure.com/conda-forge/feedstock-builds/_build/results?buildId=202872&view=logs&j=a70f640f-cc53-5cd3-6cdc-236a1aa90802&t=f5d15007-a01c-5ad8-c9ce-4d519d3b275f&l=1874

Old: https://dev.azure.com/conda-forge/feedstock-builds/_build/results?buildId=198347&view=logs&j=a70f640f-cc53-5cd3-6cdc-236a1aa90802&t=f5d15007-a01c-5ad8-c9ce-4d519d3b275f&l=1904

[hmaarrfk]

@conda-forge/curl any thoughts on this before it gets too stale?

[wolfv]

looks good to me.

[hmaarrfk]

thanks!