How to Hide WP All Export Admin Menus

function plt_hide_wp_all_export_menus() {
	//Hide "All Export".
	remove_menu_page('pmxe-admin-home');
	//Hide "All Export → New Export".
	remove_submenu_page('pmxe-admin-home', 'pmxe-admin-export');
	//Hide "All Export → Manage Exports".
	remove_submenu_page('pmxe-admin-home', 'pmxe-admin-manage');
	//Hide "All Export → Settings".
	remove_submenu_page('pmxe-admin-home', 'pmxe-admin-settings');
}

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

Where do I put this code?