Confirm if artifact paths are still needed to be prefixed with /Workspace

[andrewnester]

We are prefixing it here so cluster libs validation passes but maybe it's not required anymore

https://github.com/databricks/cli/pull/1379/files/9f19ddc3d82b9e7df6ff84ca0370a2671dbd0c1f#diff-79351a04b84c950b37b9d7c108e10b1567733ddb24de1eb247b7599c1155fa3eR134