Superuser: Simplified Chinese Translations + Chinese Locale Cleanup

values-zh, zh-rSG, and zh-rHK are not part of AOSP, so remove those.

Updated Simplified Chinese translations to follow AOSP conventions,
as well as to better reflect translations done in other parts of the
system for consistency's sake.

Patch Set 2: Fix file formatting.

Change-Id: I7fdf371e29f1c0018f3630dc74df8e158bb45182