healthd: fix battery temperature.

-Our kernel uses a non standard sysfs path for battery temperature.

-This will most likely be reverted for a kernel solution

Change-Id: Ia4487f52399fd667caddefcd75f962f1012eb298
Revert "healthd: fix battery temperature."

-Reverted in favor of a kernel solution

This reverts commit 20ebdd176b1d89fc257fdb7cf32750338fab4dc3.