feat: FooterSection에서 불필요한 Button 컴포넌트 임포트 제거

Author: toothlessdev

mosu-app/src/widgets/competition/FooterSection.tsx

@@ -5,7 +5,6 @@ import { useCallback } from "react";
 import imgParticle from "@/features/competition/assets/img-particle.png";
 
 import { useScript } from "@/shared/hooks/useScript";
-import { Button } from "@/shared/ui/button";
 
 import styles from "./FooterSection.module.scss";