How to Hide WP STAGING WordPress Backup Plugin - Backup Duplicator & Migration Admin Menus

function plt_hide_wp_staging_menus() {
	//Hide "WP Staging".
	remove_menu_page('wpstg_clone');
	//Hide "WP Staging → Staging Sites".
	remove_submenu_page('wpstg_clone', 'wpstg_clone');
	//Hide "WP Staging → Backup  Migration".
	remove_submenu_page('wpstg_clone', 'wpstg_backup');
	//Hide "WP Staging → Temporary Logins".
	remove_submenu_page('wpstg_clone', 'wpstg-settings&tab=temporary-login');
	//Hide "WP Staging → Settings".
	remove_submenu_page('wpstg_clone', 'wpstg-settings');
	//Hide "WP Staging → System Info".
	remove_submenu_page('wpstg_clone', 'wpstg-tools');
	//Hide "WP Staging → Get WP Staging Pro".
	remove_submenu_page('wpstg_clone', 'wpstg-welcome');
}

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

Where do I put this code?