docs: remove cautionary notes on database initialization from README

- Deleted warnings regarding the execution of database initialization commands to streamline the setup instructions.
- Maintained focus on essential setup steps for development environment.

README.md

@@ -31,9 +31,6 @@ npm install
 # 환경 변수 설정
 cp .env.example .env.local
 
-# 데이터베이스 초기화 <- 절대 함부로 실행하지 마시오
-# npx prisma migrate dev
-# npx prisma generate
 ```
 
 ### 개발 서버 실행