Revert "Settings: add camera tile (2/2)"

This reverts commit efc40987c9e021d653e58281709bed72d11ab30c.

Conflicts:
	res/values/liquid_strings.xml
	src/com/android/settings/liquid/quicksettings/QuickSettingsUtil.java
Settings: fixed battery stats app list

The check of mAppListGroup getPreferenceCount is no longer working
after we added other options on this page. Add a separate counter to get
back the full possible list of 12 apps

Change-Id: I679b01deec0f52d4fa2012a31b7b305f8fe176b5