fix: comflit

app.js

@@ -16,7 +16,6 @@ const secretKey = process.env.JWT_SECRET; // 실제 환경에서는 환경 변
 const refreshTokenSecretKey = process.env.JWT_REFRESH_SECRET;
 
 const https = require('https');
-const WebSocketServer = require('./WebSocket');
 const fs = require('fs');
 const expressSanitizer = require('express-sanitizer');