Settings: Cleanup and fixes the second

- get rid of some pngs which we don't need to hold in settings source
- fix auto maximize lockscreen option only for phones
- fix auto maximize is now for tablets and largscreens in real removed

Change-Id: Ie6f3554a6ee8bae05c0e66426b779e025d039956

Conflicts:
	src/com/android/settings/cyanogenmod/LockscreenInterface.java
	src/com/android/settings/slim/quicksettings/QuickSettings.java
	src/com/android/settings/slim/quicksettings/QuickSettingsUtil.java