Remove some unused code in StoreWriteBehindResourceDefinition
[WFLY-3435] jboss-as-infinispan_1_X.xsd schema has incorrect default value for flush-lock-timeout in write-behind
[WFLY-3435] Add transformers for default value of flush-lock-timeout
Merge pull request #6446 from rhusar/WFLY-3435_flushlocktimeout

[WFLY-3435] jboss-as-infinispan_1_X.xsd schema has incorrect default value for flush-lock-timeout in write-behind