Remove gcp-blueprints as the repo was deleted. Part of #587

[chensun]

Part of #587

To solve the syncing error:

{"component":"peribolos","file":"prow/cmd/peribolos/main.go:202","func":"main.main","level":"fatal","msg":"Configuration failed: failed to configure kubeflow team Google repos: failed to update team 2631639(Google) permissions on repo gcp-blueprints to write: status code 404 not one of [204], body: {"message":"Not Found","documentation_url":"https://docs.github.com/rest/reference/teams#add-or-update-team-repository-permissions-legacy"}","severity":"fatal","time":"2023-01-31T22:51:29Z"}

[google-oss-prow]

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