Revert "Framework: Forward port Long press back to kill app"

This reverts commit ca6c578c5dd7f2d8d2ee753ce0fb4a03a502e645.

	modified:   core/java/android/provider/Settings.java
	modified:   core/res/res/values/strings.xml
	modified:   core/res/res/values/symbols.xml
	modified:   policy/src/com/android/internal/policy/impl/PhoneWindowManager.java