JMXSubsystemRemove is unsafe

The service installed by JMXSubsytemAdd is used by quite a few other subsystems (arquillian, infinispan, jgroups, jsr77, sar, perhaps something in webservices) but JMXSubsytemRemove just removes it.

1) Given the number of dependencies, the removal should require the allow-resource-service-restart header.

2) The rollbackRuntime method needs to be implemented.