storage*: Drop intermediary conversion step into OriginVisit
This is no longer possible as OriginVisit instances no longer hold the same information as OriginVisitStatus.
This will allow to drop entirely those fields in the model [1]
Related to T2310
- [1] Related to swh-model!275 (closed)
Test Plan
tox
Migrated from D3380 (view on Phabricator)