modify data import logic to load country names from yaml

data/country_name.sql

@@ -1,11 +0,0 @@
---
--- PostgreSQL database dump
---
-
-CREATE TABLE public.country_name (
-    country_code character varying(2),
-    name public.hstore,
-    derived_name public.hstore,
-    country_default_language_code text,
-    partition integer
-);