feat: 채팅방 생성 mock api 응답 업데이트

Author: Jxxunnn

src/app/api/v1/chat/room/route.ts

@@ -4,12 +4,6 @@ import { NextResponse } from 'next/server';
 export async function POST() {
   const mockData: CreateChatRoomResponse = {
     roomId: 1,
-    message: {
-      messageId: 1,
-      type: 'SYSTEM_NORMAL',
-      sender: 'SYSTEM',
-      answer: ['안녕이다냥?'],
-    },
   };
 
   return NextResponse.json({ data: mockData });