remove or deprecate relationalai-sdk

[antoulas-rai]

please remove or deprecate https://www.npmjs.com/package/relationalai-sdk

as we have the newer/shinier/awesomer https://www.npmjs.com/package/@relationalai/rai-sdk-javascript

[billscheidel-rai]

Note: This issue has been migrated to https://relationalai.atlassian.net/browse/RAI-7661.

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