Revert some battery changes for the battery saver update.

Revert "Re-enable WifiMode and SmartBattery for Battery Saver Mode"

This reverts commit 3758413f8111086fada9a9e419d3eb7476b58b5e.

Revert "Fix build and a few updates for Battery Saver Mode."

This reverts commit c11f55b549f9f5f52db1c043ff8e25054ea3a28d.

Revert "battery saver mode: updates (2/2)"

This reverts commit 37cc5b7072ca32a61129d19b0e405a0e19c8617d.

Revert "battery saver mode: pimp settings"

This reverts commit 3621d77801c9f1a97aa3f280e43aaf015c235f5f.

Revert "[3/3] Settings: Battery Saver mode"

This reverts commit 6b216e30b72a25b7ac7c9e07962bcaf90c005217.

Change-Id: Idc8c2f9b603f0b99b53edb7ae1809dd9100908d5