Access Token 저장 방식 변경

src/lib/stores/auth.ts

@@ -1,3 +0,0 @@
-import { writable } from "svelte/store";
-
-export const accessTokenStore = writable<string | null>(null);

src/lib/stores/index.ts

@@ -1,2 +1 @@
-export * from "./auth";
 export * from "./key";