Remove unused 'input' field

[Caesarovich]

The input field is unused and causes a linter warning, which might be confusing for someone doing this exercise.

[github-actions]

This PR touches files which potentially affect the outcome of the tests of an exercise. This will cause all students' solutions to affected exercises to be re-tested.

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[no important files changed]

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[github-actions]

Hello. Thanks for opening a PR on Exercism 🙂

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[andrerfcsantos]

Can you also make this change in the gen.go file?

[Caesarovich]

Hi, thanks for replying.

I did not notice this .meta folder at first, my bad.
I am not quite sure to understand yet how it works, please let me know if my latest commit contains errors.

[Caesarovich]

Any follow up @andrerfcsantos ?

[andrerfcsantos]

Sorry for taking so long to review this. This looks good!

[andrerfcsantos]

Closing and reopening to force CI to run.

[andrerfcsantos]

@Caesarovich I don't like to mess with other people's branches, but in the interest of merging this, I merged main from upstream into your branch. I also made an extra commit fixing a formatting warning in gen.go.

Thanks for this!