Revert "lowmemorykiller: zram space available should be accounted"

Revert "lowmemorykiller: zram space available should be accounted"

This reverts commit b0a90d9e2cbca96e755f7e385665f1be97fa9a69.

This patch causes slow responsiveness of apps as apps would start
waiting for kswap daemon to free memory when memory reaches
to critically low.

Change-Id: I9b6ed33d93a207c93560443152dfb0231215d31f
Signed-off-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-on: http://git-master/r/552601
(cherry picked from commit 5c4229269e32b817feb906953ad2221f4aaa8ed1)
Reviewed-on: http://git-master/r/592899
GVS: Gerrit_Virtual_Submit