misc: Pooper export, summernote lang

hwe/ts/common_legacy.ts

@@ -1,10 +1,5 @@
 import { unwrap } from "./util/unwrap";
-
 import $ from "jquery";
-import Popper from 'popper.js';
-(window as unknown as { Popper: unknown }).Popper = Popper;//XXX: 왜 popper를 이렇게 불러야 하는가?
-import 'bootstrap';
-
 import axios from "axios";
 
 axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest';