Revert of Show Play Store rating and price in app list

ui/app_list/search_result_observer.h

Index: ui/app_list/search_result_observer.h
diff --git a/ui/app_list/search_result_observer.h b/ui/app_list/search_result_observer.h
index 4c5aefb6c1a02c4ad0cc01f6612fc2bdc6c7bee2..3987e88736d1c4c6b255b615b5bf781ab035c10e 100644
--- a/ui/app_list/search_result_observer.h
+++ b/ui/app_list/search_result_observer.h
@@ -16,12 +16,6 @@
 
   // Invoked when the SearchResult's badge icon has changed.
   virtual void OnBadgeIconChanged() {}
-
-  // Invoked when the SearchResult's app rating has changed.
-  virtual void OnRatingChanged() {}
-
-  // Invoked when the SearchResult's app formatted price has changed.
-  virtual void OnFormattedPriceChanged() {}
 
   // Invoked when the SearchResult's actions have changed.
   virtual void OnActionsChanged() {}