**Context** cf. feature request [#4597](https://github.com/twentyhq/twenty/issues/4597) Enables deletion of custom fields that aren't active nor of type relation Also 1. renamed a misnamed file 2. deleted redundant hook BeforeDeleteOneField as it seemed best to move the logic to the resolver instead **How was it tested?** Did not write unit tests as code is to be migrated (discussed with @Weiko). Locally tested. --------- Co-authored-by: Marie Stoppa <mariestoppa@MacBook-Pro-de-Marie.local>