This PR changes the approach of de-duplication of relations/members to actually delete the duplicate rows instead of creating an MV that removed the duplication.
The approach of creating materialized views with a handful fewer rows to remove duplication didn't seem very logical. The net effect was basically duplicating the data size in the process, adding more layers via #256 made this pretty apparent with the road / waterway layers.
This PR changes the approach of de-duplication of relations/members to actually delete the duplicate rows instead of creating an MV that removed the duplication.
The approach of creating materialized views with a handful fewer rows to remove duplication didn't seem very logical. The net effect was basically duplicating the data size in the process, adding more layers via #256 made this pretty apparent with the road / waterway layers.