Fix the title mismatch bug of Languages sub-settings page.

- modify the title of Language sub-settings page.
- remove the unused string id, pref_title_lang_selection.

Change-Id: I445493f6769c9888a27b72471fc9282df3655406
Fixes: 111322494
Test: manual

res/values/strings.xml

@@ -588,9 +588,6 @@
     <!-- Title for the locale picker activity -->
     <string name="language_picker_title">Languages</string>
 
-    <!-- Title for the language selection screen [CHAR LIMIT=25] -->
-    <string name="pref_title_lang_selection">Language preferences</string>
-
     <!-- Menu item in the locale menu. Will remove the selected locales. [CHAR LIMIT=30] -->
     <string name="locale_remove_menu">Remove</string>
 

src/com/android/settings/language/PhoneLanguagePreferenceController.java

@@ -75,7 +75,7 @@ public class PhoneLanguagePreferenceController extends AbstractPreferenceControl
         new SubSettingLauncher(mContext)
                 .setDestination(LocaleListEditor.class.getName())
                 .setSourceMetricsCategory(MetricsProto.MetricsEvent.SETTINGS_LANGUAGE_CATEGORY)
-                .setTitleRes(R.string.pref_title_lang_selection)
+                .setTitleRes(R.string.language_picker_title)
                 .launch();
         return true;
     }