Remove some dead code about "acknowledged types"

chrome/browser/sync/profile_sync_service.cc

Index: chrome/browser/sync/profile_sync_service.cc
diff --git a/chrome/browser/sync/profile_sync_service.cc b/chrome/browser/sync/profile_sync_service.cc
index 36fa5d3c42bc39117e0698ea71270e35a79d0b38..515672e37f15da21b47866b793c4a66555fef7c0 100644
--- a/chrome/browser/sync/profile_sync_service.cc
+++ b/chrome/browser/sync/profile_sync_service.cc
@@ -1814,7 +1814,6 @@ void ProfileSyncService::OnUserChoseDatatypes(
   if (directory_data_type_manager_.get())
     directory_data_type_manager_->ResetDataTypeErrors();
   ChangePreferredDataTypes(chosen_types);
-  AcknowledgeSyncedTypes();
 }
 
 void ProfileSyncService::ChangePreferredDataTypes(
@@ -2504,10 +2503,6 @@ void ProfileSyncService::UnsuppressAndStart() {
   startup_controller_->TryStart();
 }
 
-void ProfileSyncService::AcknowledgeSyncedTypes() {
-  sync_prefs_.AcknowledgeSyncedTypes(GetRegisteredDataTypes());
-}
-
 void ProfileSyncService::ReconfigureDatatypeManager() {
   // If we haven't initialized yet, don't configure the DTM as it could cause
   // association to start before a Directory has even been created.