chore: remove temporary script

init-tables.sql

@@ -1,14 +0,0 @@
--- Deprecated schema snapshot.
---
--- Runtime schema creation is currently owned by SQLAlchemy models in:
---   packages/adapters/sqlalchemy_impl/models.py
---
--- Do not apply this file to staging or production. It is retained only for
--- historical reference while the project migrates toward a proper Alembic flow.
--- Applying it would create columns such as assets.library_id/storage_key/mime_type
--- that conflict with the current runtime table shape.
-
-DO $$
-BEGIN
-    RAISE EXCEPTION 'init-tables.sql is deprecated. Use SQLAlchemy runtime schema initialization / future Alembic migrations instead.';
-END $$;