Majority of the allocation requests from XR usecases
in anorak are from normal zone and very less from movable
zone. Due to this, the 2 GB movable zone puts additional
pressure on the normal zone as these usecases cannot be served
from this zone which results into oom.
For instance, free memory during oom on anorak:
[ 3102.458683][ T1021] Normal free:237964kB
[ 3102.458717][ T1021] Movable free:1174312kB
[10364.123805][ T420] Normal free:190688kB
[10364.123832][ T420] Movable free:1317332kB
So movable zone has to be disabled for anorak which has
8 GB RAM to fulfill memory requirements from normal zone.
Hence delete the mem-offline node for anorak.
Change-Id: I8d4c11db5f941fc75aab9cc7b159dfa48e902f21