How to Hide Cookie Information | Free WP GDPR Consent Plugin Admin Menus

function plt_hide_wp_gdpr_compliance_menus() {
	//Hide "Cookie Information".
	remove_menu_page('wp-gdpr-compliance');
	//Hide "Cookie Information → Dashboard".
	remove_submenu_page('wp-gdpr-compliance', 'wp-gdpr-compliance');
	//Hide "Cookie Information → Requests".
	remove_submenu_page('wp-gdpr-compliance', 'wp-gdpr-compliance-requests');
	//Hide "Cookie Information → Settings".
	remove_submenu_page('wp-gdpr-compliance', 'wp-gdpr-compliance-settings');
}

add_action('admin_menu', 'plt_hide_wp_gdpr_compliance_menus', 11);

Where do I put this code?