Reverting this commit to fix CTS tests in oc-dr.
This reverts commit 718e0852.

Test: Tested lowmemorykiller tracing removed via traceur.
Bug: 62908858
Merged-In: Ifc1c6ac634b94e060ed1f311049bd37f6fcc8313

Change-Id: Ie462decf32578bbe74a9ec9bdb8bb4ae1b87da29