refac: lastrefresh를 general_access_log로 이전

- last_refresh에 index를 걸 것인지는 고려 필요
  - 안 거는게 차라리 나을 수도 있음
- 불필요해보이는 값 확인: nation_id,

hwe/sammo/API/General/BuildNationCandidate.php

@@ -39,7 +39,7 @@ class BuildNationCandidate extends \sammo\BaseAPI
     $gameStor = KVStorage::getStorage($db, 'game_env');
     $gameStor->cacheValues(['opentime', 'turntime']);
 
-    $general = $db->queryFirstRow('SELECT no,name,nation,owner_name,npc,lastrefresh FROM general WHERE owner=%i', $userID);
+    $general = $db->queryFirstRow('SELECT no,name,nation,owner_name,npc FROM general WHERE owner=%i', $userID);
 
     if (!$general) {
       return '장수가 없습니다';