Revert "AS7-6639 Add synchronization to workaround ISPN-2866"

This reverts commit 686cacaf15e717760259f15f6f7fe11d8fa0e049.
AS7-6639 synchronize getCache() calls to workaround ISPN-2796
fix getCache(String, boolean) parameter name
AS7-6677 Cannot deploy application using datasource with empty password value
[AS7-6678] print help usage when determining the host environment fails
[AS7-6010] also remove deployment content on the slave
Make subsystem-test use the legacy dependencies for its full classpath
AS7-6661 Ensure OperationClientException getFaiureDescription is not null
AS7-6673 Remove no-arg OperationContext.completeStep() variant
AS7-6673 Remove OperationContext.Stage.IMMEDIATE
AS7-6673 Remove OperationContext.Type
Remove OperationEntry.Flag.DEPLOYMENT_UPLOAD
Remove RunningModeControl setReloaded(boolean)
Remove deprecated interface criteria stuff
Remove Util.copyParamsToModel
Remove deprecated XmlConfigurationPersister store() variant
Remove deprecated i18n methods
Remove deprecated GlobalOperationHandlers stuff
Remove deprecated AbstractWriteAttributeHandler usage
Remove deprecated stuff in AttributeDefinition hierarchy