How to Hide XCloner - Site Backup and Restore Admin Menus

function plt_hide_xcloner_backup_and_restore_menus() {
	//Hide "Site Backup".
	remove_menu_page('xcloner_init_page');
	//Hide "Site Backup → Dashboard".
	remove_submenu_page('xcloner_init_page', 'xcloner_init_page');
	//Hide "Site Backup → Settings".
	remove_submenu_page('xcloner_init_page', 'xcloner_settings_page');
	//Hide "Site Backup → Storage Locations".
	remove_submenu_page('xcloner_init_page', 'xcloner_remote_storage_page');
	//Hide "Site Backup → Manage Backups".
	remove_submenu_page('xcloner_init_page', 'xcloner_manage_backups_page');
	//Hide "Site Backup → Schedules & Profiles".
	remove_submenu_page('xcloner_init_page', 'xcloner_scheduled_backups_page');
	//Hide "Site Backup → Generate Backups".
	remove_submenu_page('xcloner_init_page', 'xcloner_generate_backups_page');
	//Hide "Site Backup → Restore Site".
	remove_submenu_page('xcloner_init_page', 'xcloner_restore_site');
	//Hide "Site Backup → Clone Site".
	remove_submenu_page('xcloner_init_page', 'xcloner_clone_site');
}

add_action('admin_menu', 'plt_hide_xcloner_backup_and_restore_menus', 11);
Where do I put this code?