remove unused export

src/api/backend.ts

@@ -1,8 +1,6 @@
 import axios, { AxiosInstance, AxiosRequestConfig } from "axios";
 import { getTokenCookie } from "@utils/auth";
 
-export const HOST = `${process.env.NEXT_PUBLIC_API_URL}`;
-
 const axiosInstance: AxiosInstance = axios.create({
   baseURL: process.env.NEXT_PUBLIC_API_URL,
 });
@@ -21,7 +19,7 @@ export enum APIPath {
   AUTH_TOKEN_VERIFY = "/api-token-verify",
 }
 
-export type API = {
+type API = {
   path: APIPath;
   urlParams?: {
     id?: string | number;