Settings: Battery Options

Until we find a suitable solution for displaying the text percentage
on the battery bar, hide the option.

Change-Id: I07cc98d3ee32c037c9dcf1f8b2ecb368c96aab47
Merge branch 'kitkat' of https://github.com/AOSPA/android_packages_apps_Settings into kitkat
Merge remote-tracking branch 'legacy/kitkat' into kitkat