aries | p1: staging: zram: remove unnecessary OOM messages

upstream
commit reference: 78110bb8dc4a7ff331bfa3cfe7d4e287cfb3f22b

Change-Id: I1cddc49e9f301070edcd61246f770688dccb3dfe
Signed-off-by: Humberto Borba <humberos@gmail.com>