composer install delete from parameters.yml symfony 3

"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
{
"extra": {
        "symfony-app-dir": "app",
        "symfony-web-dir": "web",
        "incenteev-parameters": {
            "file": "app/config/parameters.yml",
            "keep-outdated": true
        },
        "branch-alias": {
            "dev-master": "2.5-dev"
        }
    }
}