Added ability to delete account of a user

src/database/delete.py

@@ -16,3 +16,11 @@ def delete_master_pass(engine: Engine, user_id: int) -> None:
     )
     with sqlmodel.Session(engine) as session:
         session.exec(statement)
+
+
+def delete_account(engine: Engine, user_id: int, name: str) -> None:
+    statement = sqlmodel.delete(models.Account).where(
+        models.Account.user_id == user_id and models.Account.name == name
+    )
+    with sqlmodel.Session(engine) as session:
+        session.exec(statement)