st: fix: 불필요 코드 삭제

apps/st/src/shared/api/client.ts

@@ -1,9 +1,7 @@
-import axios, { type AxiosInstance } from "axios";
 import { Client } from "@common/network";
 import { BASE_URL, ST_SERVICE_BASE_URL } from "../config/api";
-import { AUTH_USER_ID, CLAIM_NAME, SITE_ID } from "../config/env";
+import { SITE_ID } from "../config/env";
 import { setCookie } from "../lib";
-import Cookies from "js-cookie";
 
 setCookie("site-id-key", SITE_ID);