Translate: remove alpha language support

components/translate/core/browser/translate_download_manager.cc

Index: components/translate/core/browser/translate_download_manager.cc
diff --git a/components/translate/core/browser/translate_download_manager.cc b/components/translate/core/browser/translate_download_manager.cc
index aebdd3dfc92d4c4c92dea2c3f7b791ec9f1f7da5..53b55952406fd814895ea914d24575a0bb37b86d 100644
--- a/components/translate/core/browser/translate_download_manager.cc
+++ b/components/translate/core/browser/translate_download_manager.cc
@@ -100,17 +100,6 @@ bool TranslateDownloadManager::IsSupportedLanguage(
   return language_list->IsSupportedLanguage(language);
 }
 
-// static
-bool TranslateDownloadManager::IsAlphaLanguage(const std::string& language) {
-  TranslateLanguageList* language_list = GetInstance()->language_list();
-  if (!language_list) {
-    NOTREACHED();
-    return false;
-  }
-
-  return language_list->IsAlphaLanguage(language);
-}
-
 void TranslateDownloadManager::ClearTranslateScriptForTesting() {
   if (script_.get() == NULL) {
     NOTREACHED();