Docker compose, remove mysql

docker-composer.yml

# For more information: https://laravel.com/docs/sail
version: '3'
services:
    laravel.test:
        build:
            context: ./docker/8.0
            dockerfile: Dockerfile
            args:
                WWWGROUP: '${WWWGROUP}'
        image: sail-8.0/app
        ports:
            - '${APP_PORT:-80}:80'
        environment:
            WWWUSER: '${WWWUSER}'
            LARAVEL_SAIL: 1
        volumes:
            - '.:/var/www/html'
        networks:
            - sail
        depends_on:
#            - mysql
            - redis
            # - selenium
    # selenium:
    #     image: 'selenium/standalone-chrome'
    #     volumes:
    #         - '/dev/shm:/dev/shm'
    #     networks:
    #         - sail
    #     depends_on:
    #         - laravel.test
#    mysql:
#        image: 'mysql:8.0'
#        ports:
#            - '${FORWARD_DB_PORT:-3306}:3306'
#        environment:
#            MYSQL_ROOT_PASSWORD: '${DB_PASSWORD}'
#            MYSQL_DATABASE: '${DB_DATABASE}'
#            MYSQL_USER: '${DB_USERNAME}'
#            MYSQL_PASSWORD: '${DB_PASSWORD}'
#            MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
#        volumes:
#            - 'sailmysql:/var/lib/mysql'
#        networks:
#            - sail
    redis:
        image: 'redis:alpine'
        ports:
            - '${FORWARD_REDIS_PORT:-6379}:6379'
        volumes:
            - 'sailredis:/data'
        networks:
            - sail
    # memcached:
    #     image: 'memcached:alpine'
    #     ports:
    #         - '11211:11211'
    #     networks:
    #         - sail
    mailhog:
        image: 'mailhog/mailhog:latest'
        ports:
            - 1025:1025
            - 8025:8025
        networks:
            - sail
networks:
    sail:
        driver: bridge
volumes:
#    sailmysql:
#        driver: local
    sailredis:
        driver: local