refactor:schema.sql

sql/schema.sql

@@ -15,9 +15,7 @@ CREATE TABLE `strategy` (
   `expect_code` varchar(255)    NOT NULL DEFAULT '', 
   `tag`         varchar(255)    NOT NULL DEFAULT '',
   `header`      text            NOT NULL DEFAULT '',
-  `endpoint`    varchar(255)    NOT NULL DEFAULT '',
   `method`      varchar(255)    DEFAULT "get",
-  `header`      text            DEFAULT "",
   `post_data`   text            DEFAULT "",
   `note`        text            NOT NULL DEFAULT '',
   `max_step`    int(4)          NOT NULL DEFAULT 3,