Revert "OOM score management"

This reverts commit af5451f0aca12467e2eeb4c8e14d2b6b4c7083fc.

Reason for revert: Causes b/110976005

Exempt-From-Owner-Approval: Needed to avoid a widespread breakage
Change-Id: Ibe969726601d6e4ce9a66b1bf8998cb33a955619
2 files changed