Translate: remove alpha language support

components/translate/core/browser/translate_download_manager.h

Index: components/translate/core/browser/translate_download_manager.h
diff --git a/components/translate/core/browser/translate_download_manager.h b/components/translate/core/browser/translate_download_manager.h
index 5d1c4e2d85c8cd6f877ef3f85fda4396f2f003dd..c7f69233db31284f9b3e8b13d2eb42621eec41e2 100644
--- a/components/translate/core/browser/translate_download_manager.h
+++ b/components/translate/core/browser/translate_download_manager.h
@@ -74,10 +74,6 @@ class TranslateDownloadManager {
   // Returns true if |language| is supported by the translation server.
   static bool IsSupportedLanguage(const std::string& language);
 
-  // Returns true if |language| is supported by the translation server as an
-  // alpha language.
-  static bool IsAlphaLanguage(const std::string& language);
-
   // Must be called to shut Translate down. Cancels any pending fetches.
   void Shutdown();