Update postgres.yml

Author: Reza Rahman

postgres.yml

@@ -25,8 +25,6 @@ spec:
                 configMapKeyRef:
                   name: postgres-config
                   key: postgres_password
-            - name: PGDATA
-              value: /var/lib/postgresql/data/pgdata
           ports:
             - containerPort: 5432
               name: postgres