[jboss-jira] [JBoss JIRA] (WFLY-11821) Remove ha-singleton-service/with-backups quickstart since it's no longer supported without deprecated API usage

Remove ha-singleton-service/with-backups quickstart since it's no longer supported without deprecated API usage --------------------------------------------------------------------------------------------------------------- Key: WFLY-11821 URL: https://issues.jboss.org/browse/WFLY-11821 Project: WildFly Issue Type: Task Reporter: Radoslav Husar Assignee: Radoslav Husar Priority: Major Remove ha-singleton-service/with-backups quickstart since it's no longer supported without deprecated API usage. This is due to MSC-203.