chore: Remove outposts example

[bryantbiggs]

Description

• Remove outposts example

Motivation and Context

• It will be hosted here instead feat: Add Hybrid section with local cluster on Outposts aws-ia/terraform-aws-eks-blueprints#2008
  • There isn't anything overly specific to local clusters on outposts from a module perspective. So we'll reduce the amount of configurations we carry here and keep the content focused on the module, and move this example usage pattern over to the blueprints project

Breaking Changes

• No, its just an example

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects

• I have executed pre-commit run -a on my pull request

[antonbabenko]

This PR is included in version 20.24.1 🎉

[github-actions]

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