qcom-common: Do not build charger

This package doesn't exist anymore. Charger is now symlinked to /sbin/healthd
Remove charger images too because they aren't compiling anymore

Change-Id: Ib04b8a22536633aa926144fe40e4c25f29e14835
Merge branch 'cm-12.0' of https://github.com/CyanogenMod/android_device_samsung_qcom-common into cm-12.0