Remove obsolete MSSQL and PostgreSQL scripts and related types

- Deleted `seed-manzana.go`, `site-holder-attach.go`, `types.go`, `utils.go`, `main.go` files from both `mssql-info-test` and `mssql-test` directories.
- Removed `pg-info-test/main.go` and `test-etl/main.go` files.
- Eliminated `wkb-to-ewkb/main.go` for unused WKB to EWKB conversion functionality.
- Cleaned up associated functions and types that are no longer needed.

benchmark-results.md

@@ -1,6 +1,6 @@
 # Benchmark go-migrate — 2,000,000 filas
 
-**Tabla**: `Cartografia.MANZANA`  
+**Tabla**: `civic.parcels`  
 **Fecha**: 2026-05-29  
 **Entorno**: Docker local (MSSQL 2022 Developer / PostgreSQL 16 + PostGIS)