Remove ensure db

src/data_provider/sqlite.rs

@@ -10,15 +10,9 @@ pub fn create_db() {
         connection.execute("PRAGMA foreign_keys = ON;", []).unwrap();
 
         create_tables(&connection);
-    } else {
-        let connection = Connection::open(&db_file).unwrap();
-
-        ensure_db_schema(&connection);
     }
 }
 
-fn ensure_db_schema(_: &Connection) {}
-
 fn create_tables(conn: &Connection) {
     make_card_set(conn).unwrap();
     make_settings(conn).unwrap();