Removes unused resolve_vulnerability uniti_primitives

Darby Freyrequested to merge
remove-unused-rv-unit-primitives into master

What does this MR do and why?

Related to Clean up resolve vulnerability unit_primitives (#471729 - closed), this MR removes the resolve_vulnerablity UP from the vertex and anthropic proxies. These are no longer needed as explain_vulnerabilty uses a standalone service.

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