chore: removes CLI samples see https://github.com/microsoft/kiota/pull/6734

[baywet]

related microsoftgraph/msgraph-cli#579

[learn-build-service-prod]

Learn Build status updates of commit 98023cb:

✅ Validation status: passed

File	Status	Preview URL	Details
OpenAPI/index.yml	✅Succeeded
OpenAPI/kiota/dependencies.md	✅Succeeded
OpenAPI/kiota/index.yml	✅Succeeded
OpenAPI/kiota/models.md	✅Succeeded
OpenAPI/kiota/overview.md	✅Succeeded
OpenAPI/kiota/quickstarts/cli.md	✅Succeeded	n/a (file deleted or renamed)
OpenAPI/kiota/quickstarts/index.md	✅Succeeded
OpenAPI/kiota/toc.yml	✅Succeeded
OpenAPI/kiota/tutorials/cli-azure.md	✅Succeeded	n/a (file deleted or renamed)
OpenAPI/kiota/using.md	✅Succeeded

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