[Autofill] Enable Autofill UKM by default.

components/autofill/core/browser/autofill_experiments.cc

Index: components/autofill/core/browser/autofill_experiments.cc
diff --git a/components/autofill/core/browser/autofill_experiments.cc b/components/autofill/core/browser/autofill_experiments.cc
index 6ca3204c93d527153fda0861ab51b821c2c3a9c5..1ba34e2c85256a614d05f3e7f9f1b02a7b1c9d0d 100644
--- a/components/autofill/core/browser/autofill_experiments.cc
+++ b/components/autofill/core/browser/autofill_experiments.cc
@@ -32,8 +32,6 @@ const base::Feature kAutofillCreditCardPopupLayout{
     "AutofillCreditCardPopupLayout", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kAutofillCreditCardLastUsedDateDisplay{
     "AutofillCreditCardLastUsedDateDisplay", base::FEATURE_DISABLED_BY_DEFAULT};
-const base::Feature kAutofillUkmLogging{"AutofillUkmLogging",
-                                        base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kAutofillUpstreamRequestCvcIfMissing{
     "AutofillUpstreamRequestCvcIfMissing", base::FEATURE_DISABLED_BY_DEFAULT};
 const base::Feature kAutofillUpstreamUseAutofillProfileComparatorForName{
@@ -230,10 +228,6 @@ bool IsCreditCardUploadEnabled(const PrefService* pref_service,
   return !group_name.empty() && group_name != "Disabled";
 }
 
-bool IsUkmLoggingEnabled() {
-  return base::FeatureList::IsEnabled(kAutofillUkmLogging);
-}
-
 bool IsAutofillUpstreamRequestCvcIfMissingExperimentEnabled() {
 #if defined(OS_ANDROID)
   return false;