Remove generated file headers

What does this MR do?

Remove generated file headers

The file headers have been generated with the default boilerplate header from kubebuilder.

https://book-v1.book.kubebuilder.io/beyond_basics/boilerplate

The license information will be defined in !7 (merged).

Closes #28 (closed)

Author's Checklist

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Required

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Expected

• Test plan indicating conditions for success has been posted and passes.
• Documentation is created or updated.
• Tests are added.

Related issues

Closes #28 (closed)