Revert "Add EBS interface to BatteryController"

Revert "Add Extreme Battery Saver behavior"

Revert submission 12248919-153940148

Reason for revert: b/162539418
Reverted Changes:
Ie6abbbb45:Add EBS interface to BatteryController
I60bd64e26:Add Extreme Battery Saver behavior

Bug: 162539418
Change-Id: If264b97788d57d97683cd11ad5607cbdebab118e
5 files changed