Deprecate Registries #170
Description
Is your feature request related to a specific problem?
We have registry fields on systems and registry tables that are not being used and causing confusion. Let's remove them if we can!
registries are an extremely old and never-used feature ...
It was conceived as a way to help organizations organize their fides resources into sub-units. Specifically you could assign systems to a registry to logically "group" them. This use-case has never materialized
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