Remove copy of Locale.adjustLanguageCode.

(cherry picked from commit 1d31a5f824)

Change-Id: I7b30a153a44dc1f99a9ddfe256b770d7305a74b7

core/java/android/content/res/Resources.java

@@ -1824,15 +1824,7 @@ public class Resources {
             remainder = languageTag.substring(separator);
         }
 
-        if ("id".equals(language)) {
-            return "in" + remainder;
-        } else if ("yi".equals(language)) {
-            return "ji" + remainder;
-        } else if ("he".equals(language)) {
-            return "iw" + remainder;
-        } else {
-            return languageTag;
-        }
+        return Locale.adjustLanguageCode(language) + remainder;
     }
 
     /**