remove obsolete kontor.py

kontor-api/src/db/session.py

@@ -0,0 +1,15 @@
+from typing import Generator, Annotated
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker, Session
+
+from src.core.config import settings
+
+SQLALCHEMY_DATABASE_URL = settings.DATABASE_URL
+engine = create_engine(SQLALCHEMY_DATABASE_URL)
+
+SessionLocal = sessionmaker(bind=engine)
+
+def get_db() -> Generator:
+    with SessionLocal() as db:
+        yield db