Since LRUItem deletions now occur only when tempList is purged, we will not account for the reduced memory due to an item when it is evicted.
Since LRUItem deletions now occur only when tempList is purged, we will
not account for the reduced memory due to an item when it is evicted.

Signed-off-by: Abhishek Nanda <ed99088ce9d6aa2d74040139769f7cf3fac7d113@zynga.com>

zbase/ep-engine,zbase/ep-engine,zbase/ep-engine,zbase/ep-engine,zbase/ep-engine