Navigation Bar height setting [2/2]
Revert "Add an option to enable/disable the Navigation Bar (2/2)"

Not needed anymore - to disable navbar simply set its height to 0%

This reverts commit b89799abaf0fa63eef39888d2f97253ceee5a08e.

Conflicts:
	res/values/pa_strings.xml
	res/xml/additional_settings.xml
	src/com/android/settings/AOSPAL/AdditionalSettings.java