This has been disallowed by the SELinux for several years now,
so can safely be removed. Given that saveLocaleLocked is
simplified quite a bit, we can now inline into its only caller.
bug: 18910417
(cherry picked from commit 70e8f6600de8a2b9cbb17cd919b14a4609fc68bd)
Change-Id: Ib2888ea22ffca6f4b402efd5780f89c924cd1570