Revert "Implementation of Koush superuser (2/3)"

This reverts commit ca8bd56d364d3e0154c198b433a61f7e2f638600.

Conflicts:
	AndroidManifest.xml
	proguard.flags
	res/xml/settings_headers.xml

Change-Id: I990ecf9986ea2991676af47f6b4558c1b7a8b9d2
Remove superuser menu from advanced setting
Removed duplicate definitions

Change-Id: I4ebcda35074663d34dfd3b5b123c30e56735842f