According to https://access.redhat.com/articles/2158031, the org.jboss.xts module was marked as deprecated in EAP 7.4

Running 8.0.0.Alpha-DR1 wsat-simple, wsba-coordinator-completion-simple and wsba-participant-completion-simple quickstarts on EAP server of the same version leads to a new warning as follows:

WFLYSRV0221: Deployment "deployment.wsat-simple.war" is using a deprecated module ("org.jboss.xts") which may be removed in future versions without notice.