fix: revert "feat: [marketingplatformadminapi] new module for marketingplatformadminapi"#11196

suztomo merged 1 commit intomaingoogleapis/google-cloud-java:mainfrom

revert-11194-new-library/marketingplatformadminapi-8oXU5googleapis/google-cloud-java:revert-11194-new-library/marketingplatformadminapi-8oXU5Copy head branch name to clipboard