Revert "Adding the kiota banner"

[frankandrea221]

Reverts MicrosoftDocs/openapi-docs#114

[learn-build-service-prod[bot]]

Learn Build status updates of commit 7e5ffcd:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
OpenAPI/kiota/images/kiota.png	:white_check_mark:Succeeded
OpenAPI/kiota/overview.md	:white_check_mark:Succeeded

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[frankandrea221]