Mark timezone ID array as translatable="false".

These are internal tokens, not user-visible strings, so they need to
be marked this way so the translators do not try to change them.

Change-Id: I0cf5cb676fb426406aea54ed57773ab6d2c95180
diff --git a/res/values/arrays.xml b/res/values/arrays.xml
index 1cc2ac0..398771a 100644
--- a/res/values/arrays.xml
+++ b/res/values/arrays.xml
@@ -143,7 +143,7 @@
     </string-array>
 
     <!-- This list was taken from package/apps/Settings/res/xml/timezones.xml -->
-    <string-array name="timezone_values">
+    <string-array name="timezone_values" translatable="false">
         <item>"Pacific/Majuro"</item>
         <item>"Pacific/Midway"</item>
         <item>"Pacific/Honolulu"</item>