Context:

The functionality of the existing _resolveTenantsForVersions endpoint that works for a single definition is superseded by the new endpoint that works for multiple definitions at once

AT:

• The POST /api/definition/:type:/:key:/_resolveTenantsForVersions is removed
• Documentation is updated

Justification:

We should strive for a clean and maintainable codebase. Having unused code is redundant and should be cleared up to reduce the complexity of maintenance