Remove WriteAttributeHandlers
Remove #registerDeploymentModel(final DescriptionProvider descriptionProvider)
Remove #registerSubsystemModel(DescriptionProvider descriptionProvider)
Remove #registerOperationHandler(String operationName, OperationStepHandler handler, DescriptionProvider descriptionProvider)
Remove #registerReadWriteAttribute(String attributeName, OperationStepHandler readHandler, OperationStepHandler writeHandler, AttributeAccess.Storage storage)
Remove #registerReadWriteAttribute(String attributeName, OperationStepHandler readHandler, OperationStepHandler writeHandler, EnumSet<AttributeAccess.Flag> flags)
Remove #registerReadOnlyAttribute(String attributeName, OperationStepHandler readHandler, EnumSet<AttributeAccess.Flag> flags)
Remove #registerMetric(String attributeName, OperationStepHandler metricHandler)
Remove #registerMetric(String attributeName, OperationStepHandler metricHandler, EnumSet<AttributeAccess.Flag> flags)
Merge pull request #6391 from ctomc/management-cleanup

Remove deprecated mgmt methods / classes