Remove unnecessary and spammy NOTIMPLEMENTED() in AutofillClientIOS.

ios/chrome/browser/ui/autofill/autofill_client_ios.mm

Index: ios/chrome/browser/ui/autofill/autofill_client_ios.mm
diff --git a/ios/chrome/browser/ui/autofill/autofill_client_ios.mm b/ios/chrome/browser/ui/autofill/autofill_client_ios.mm
index fb03cb92d75e3ce40edf7323f01bd064ead2f77d..2212e68f950a00fd06ec660693200b58a07170cf 100644
--- a/ios/chrome/browser/ui/autofill/autofill_client_ios.mm
+++ b/ios/chrome/browser/ui/autofill/autofill_client_ios.mm
@@ -56,9 +56,8 @@ PrefService* AutofillClientIOS::GetPrefs() {
   return browser_state_->GetPrefs();
 }
 
-// TODO(jdonnelly): Implement this when adding credit card upload.
+// TODO(crbug.com/535784): Implement this when adding credit card upload.
 syncer::SyncService* AutofillClientIOS::GetSyncService() {
-  NOTIMPLEMENTED();
   return nullptr;
 }