Refactor SubtypeLocaleUtils a bit

Change-Id: If8b7fd5ef0b4ff3791deeacc12abb256a10176bf
diff --git a/java/res/values/strings.xml b/java/res/values/strings.xml
index 937a799..a4e2d29 100644
--- a/java/res/values/strings.xml
+++ b/java/res/values/strings.xml
@@ -365,18 +365,12 @@
          (Compact) can be an abbreviation to fit in the CHAR LIMIT.
          TODO: Remove translatable=false once we are settled down with the naming. -->
     <string name="subtype_generic_compact" translatable="false"><xliff:g id="LANGUAGE_NAME" example="Hindi">%s</xliff:g> (Compact)</string>
-    <!-- TODO: Uncomment once we can handle IETF language tag with script name specified.
-         Description for Serbian Cyrillic keyboard subtype [CHAR LIMIT=25]
-         (Cyrillic) can be an abbreviation to fit in the CHAR LIMIT.
-    <string name="subtype_serbian_cyrillic">Serbian (Cyrillic)</string>
-         Description for Serbian Latin keyboard subtype [CHAR LIMIT=25]
-         (Latin) can be an abbreviation to fit in the CHAR LIMIT.
-    <string name="subtype_serbian_latin">Serbian (Latin)</string>
-         Description for Serbian Latin keyboard subtype with explicit keyboard layout [CHAR LIMIT=25]
-         (Latin) can be an abbreviation to fit in the CHAR LIMIT.
-         This should be identical to subtype_serbian_latin aside from the trailing (%s).
-    <string name="subtype_with_layout_sr-Latn">Serbian (Latin) (<xliff:g id="KEYBOARD_LAYOUT" example="QWERTY">%s</xliff:g>)</string>
-    -->
+    <!-- Description for "LANGUAGE_NAME" (Cyrillic) keyboard subtype [CHAR LIMIT=25]
+         (Cyrillic) can be an abbreviation to fit in the CHAR LIMIT. -->
+    <string name="subtype_generic_cyrillic"><xliff:g id="LANGUAGE_NAME" example="Serbian">%s</xliff:g> (Cyrillic)</string>
+    <!-- Description for "LANGUAGE_NAME" (Latin) keyboard subtype [CHAR LIMIT=25]
+         (Latin) can be an abbreviation to fit in the CHAR LIMIT. -->
+    <string name="subtype_generic_latin"><xliff:g id="LANGUAGE_NAME" example="Serbian">%s</xliff:g> (Latin)</string>
     <!-- This string is displayed in a language list that allows to choose a language for
 suggestions in a software keyboard. This setting won't give suggestions in any particular
 language, hence "No language".