refactor: 필요없는 설정을 삭제한다

Author: devxb

src/main/resources/application.properties

@@ -8,7 +8,6 @@ spring.datasource.username=
 spring.datasource.password=
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 
-spring.jpa.database-platform=org.hibernate.dialect.MySQLDialect
 spring.jpa.hibernate.ddl-auto=update
 spring.jpa.open-in-view=false