Dialer: remove obsolete values-en-rXX

We have a dedicated selector for search language,
so there's no more need to keep this.

Change-Id: I47bf4fb6dbe7881fb54949de4542ffe42331a009
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_packages_apps_Dialer into android-4.4