How to Hide BackWPup Admin Menus

function plt_hide_backwpup_menus() {
	//Hide "BackWPup".
	remove_menu_page('backwpup');
	//Hide "BackWPup → Dashboard".
	remove_submenu_page('backwpup', 'backwpup');
	//Hide "BackWPup → Jobs".
	remove_submenu_page('backwpup', 'backwpupjobs');
	//Hide "BackWPup → Add new job".
	remove_submenu_page('backwpup', 'backwpupeditjob');
	//Hide "BackWPup → Logs".
	remove_submenu_page('backwpup', 'backwpuplogs');
	//Hide "BackWPup → Backups".
	remove_submenu_page('backwpup', 'backwpupbackups');
	//Hide "BackWPup → Settings".
	remove_submenu_page('backwpup', 'backwpupsettings');
	//Hide "BackWPup → About".
	remove_submenu_page('backwpup', 'backwpupabout');
}

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