How to Hide JetBackup Admin Menus

function plt_hide_backup_menus() {
	//Hide "JetBackup".
	remove_menu_page('jetbackup');
	//Hide "JetBackup → JetBackup".
	remove_submenu_page('jetbackup', 'jetbackup');
	//Hide "JetBackup → Backups".
	remove_submenu_page('jetbackup', 'jetbackup#!/backups');
	//Hide "JetBackup → Backup Jobs".
	remove_submenu_page('jetbackup', 'jetbackup#!/jobs');
	//Hide "JetBackup → Destinations".
	remove_submenu_page('jetbackup', 'jetbackup#!/destinations');
	//Hide "JetBackup → Schedules".
	remove_submenu_page('jetbackup', 'jetbackup#!/schedules');
	//Hide "JetBackup → Queue".
	remove_submenu_page('jetbackup', 'jetbackup#!/queue');
	//Hide "JetBackup → Downloads".
	remove_submenu_page('jetbackup', 'jetbackup#!/downloads');
	//Hide "JetBackup → Alerts".
	remove_submenu_page('jetbackup', 'jetbackup#!/alerts');
	//Hide "JetBackup → Settings".
	remove_submenu_page('jetbackup', 'jetbackup#!/settings/general');
	//Hide "JetBackup → System Info".
	remove_submenu_page('jetbackup', 'jetbackup#!/system');
}

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