docs(eks-v2-alpha): remove spot instance related documentation

[wafuwafu13]

Issue # (if applicable)

None

Reason for this change

spot interrupt handler is installed by default in aws-eks, but not in eks-v2-alpha.

Description of changes

Remove spot instance related documentation in eks-v2-alpha.

Describe any new or updated permissions being added

Description of how you validated changes

This is a documentation-only change. No test modifications are required.

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[samson-keung]

Thanks for catching this!

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Pull request has been modified.

[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 0df6c91
• Result: SUCCEEDED
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[mergify]

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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