misc: 불필요한 베팅 import 코드 제거

hwe/ts/betting.ts

@@ -1,8 +1,4 @@
 import $ from 'jquery';
-import axios from 'axios';
-import { setAxiosXMLHttpRequest } from '@util/setAxiosXMLHttpRequest';
-import type { InvalidResponse } from '@/defs';
-import { convertFormData } from '@util/convertFormData';
 import { unwrap_any } from '@util/unwrap_any';
 import { SammoAPI } from './SammoAPI';