Revert "added expanded desktop option"

This reverts commit 2bda6462b80a893555de1f459408c744d99b39d8.

 Changes to be committed:

	modified:   core/java/android/provider/Settings.java
	deleted:    core/res/res/drawable-hdpi/ic_lock_expanded_desktop.png
	deleted:    core/res/res/drawable-mdpi/ic_lock_expanded_desktop.png
	deleted:    core/res/res/drawable-sw600dp-xhdpi/ic_lock_expanded_desktop.png
	deleted:    core/res/res/drawable-xhdpi/ic_lock_expanded_desktop.png
	modified:   core/res/res/values/public.xml
	modified:   core/res/res/values/strings.xml
	modified:   policy/src/com/android/internal/policy/impl/GlobalActions.java
	modified:   policy/src/com/android/internal/policy/impl/PhoneWindowManager.java