Revert "OBMFULL-6103 Subtract lastSync by conf.transaction-timeout between CalendarBinding and EventHandler. It only concerns getSync and it's the only path before serializing the EventChanges then send it back to the client"

This reverts commit 1290aad00881cf3bebf55bff8f7ff60699d4f8ef.
Revert "OBMFULL-6103 Do the same thing for AddressBookBinding (lastsync - transactionTimeout)"

This reverts commit c75b5e628d976959d805575d8196707164ba5ff6.