Revert "MB-7597: adjust the changes for high CPU usage."

This reverts commit eee2e9564ef844cf8cc435911d9e80af0dece244.

Change-Id: Ib30942fbde5287f903e8e7a38877380d7e1511ea
Reviewed-on: http://review.couchbase.org/24902
Reviewed-by: Michael Wiederhold <mike@couchbase.com>
Tested-by: Michael Wiederhold <mike@couchbase.com>