--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1844,19 +1844,16 @@ pref("browser.crashReports.unsubmittedCh
 // The truthy values of "extensions.formautofill.available" are "on" and "detect",
 // any other value means autofill isn't available.
 // "detect" means it's enabled if conditions defined in the extension are met.
 pref("extensions.formautofill.available", "detect");
 pref("extensions.formautofill.creditCards.available", true);
 pref("extensions.formautofill.addresses.enabled", true);
 pref("extensions.formautofill.addresses.capture.enabled", false);
 pref("extensions.formautofill.creditCards.enabled", true);
-// Temporary preference to control displaying the UI elements for
-// credit card autofill used for the duration of the A/B test.
-pref("extensions.formautofill.creditCards.hideui", false);
 // Enable the checkbox in sync options for credit card data sync service
 pref("services.sync.engine.creditcards.available", true);
 // Pref for shield/heartbeat to recognize users who have used Credit Card
 // Autofill. The valid values can be:
 // 0: none
 // 1: submitted a manually-filled credit card form (but didn't see the doorhanger
 //    because of a duplicate profile in the storage)
 // 2: saw the doorhanger

--- a/browser/extensions/formautofill/FormAutofill.jsm
+++ b/browser/extensions/formautofill/FormAutofill.jsm
@@ -22,18 +22,16 @@ const CREDITCARDS_USED_STATUS_PREF = "ex
 const ENABLED_AUTOFILL_ADDRESSES_PREF =
   "extensions.formautofill.addresses.enabled";
 const ENABLED_AUTOFILL_ADDRESSES_CAPTURE_PREF =
   "extensions.formautofill.addresses.capture.enabled";
 const ENABLED_AUTOFILL_CREDITCARDS_PREF =
   "extensions.formautofill.creditCards.enabled";
 const ENABLED_AUTOFILL_CREDITCARDS_REAUTH_PREF =
   "extensions.formautofill.reauth.enabled";
-const AUTOFILL_CREDITCARDS_HIDE_UI_PREF =
-  "extensions.formautofill.creditCards.hideui";
 const SUPPORTED_COUNTRIES_PREF = "extensions.formautofill.supportedCountries";
 
 XPCOMUtils.defineLazyPreferenceGetter(
   this,
   "logLevel",
   "extensions.formautofill.loglevel",
   "Warn"
 );
@@ -112,21 +110,16 @@ XPCOMUtils.defineLazyPreferenceGetter(
 );
 XPCOMUtils.defineLazyPreferenceGetter(
   FormAutofill,
   "_isAutofillCreditCardsEnabled",
   ENABLED_AUTOFILL_CREDITCARDS_PREF
 );
 XPCOMUtils.defineLazyPreferenceGetter(
   FormAutofill,
-  "isAutofillCreditCardsHideUI",
-  AUTOFILL_CREDITCARDS_HIDE_UI_PREF
-);
-XPCOMUtils.defineLazyPreferenceGetter(
-  FormAutofill,
   "isAutofillAddressesFirstTimeUse",
   ADDRESSES_FIRST_TIME_USE_PREF
 );
 XPCOMUtils.defineLazyPreferenceGetter(
   FormAutofill,
   "AutofillCreditCardsUsedStatus",
   CREDITCARDS_USED_STATUS_PREF
 );

--- a/browser/extensions/formautofill/FormAutofillContent.jsm
+++ b/browser/extensions/formautofill/FormAutofillContent.jsm
@@ -178,23 +178,19 @@ AutofillProfileAutoCompleteSearch.protot
       activeFieldDetail.fieldName
     );
     const isCreditCardField = FormAutofillUtils.isCreditCardField(
       activeFieldDetail.fieldName
     );
     let isInputAutofilled = activeFieldDetail.state == FIELD_STATES.AUTO_FILLED;
     let allFieldNames = activeSection.allFieldNames;
     let filledRecordGUID = activeSection.filledRecordGUID;
-
-    let creditCardsEnabledAndVisible =
-      FormAutofill.isAutofillCreditCardsEnabled &&
-      !FormAutofill.isAutofillCreditCardsHideUI;
     let searchPermitted = isAddressField
       ? FormAutofill.isAutofillAddressesEnabled
-      : creditCardsEnabledAndVisible;
+      : FormAutofill.isAutofillCreditCardsEnabled;
     let AutocompleteResult = isAddressField ? AddressResult : CreditCardResult;
     let isFormAutofillSearch = true;
     let pendingSearchResult = null;
 
     ProfileAutocomplete.lastProfileAutoCompleteFocusedInput = activeInput;
     // Fallback to form-history if ...
     //   - specified autofill feature is pref off.
     //   - no profile can fill the currently-focused input.

--- a/browser/extensions/formautofill/FormAutofillParent.jsm
+++ b/browser/extensions/formautofill/FormAutofillParent.jsm
@@ -576,20 +576,16 @@ class FormAutofillParent extends JSWindo
           1
         );
       }
     }
     return showDoorhanger;
   }
 
   async _onCreditCardSubmit(creditCard, browser, timeStartedFillingMS) {
-    if (FormAutofill.isAutofillCreditCardsHideUI) {
-      return false;
-    }
-
     // Updates the used status for shield/heartbeat to recognize users who have
     // used Credit Card Autofill.
     let setUsedStatus = status => {
       if (FormAutofill.AutofillCreditCardsUsedStatus < status) {
         Services.prefs.setIntPref(
           FormAutofill.CREDITCARDS_USED_STATUS_PREF,
           status
         );

--- a/browser/extensions/formautofill/FormAutofillPreferences.jsm
+++ b/browser/extensions/formautofill/FormAutofillPreferences.jsm
@@ -171,20 +171,17 @@ FormAutofillPreferences.prototype = {
 
     this.refs = {
       formAutofillFragment,
       formAutofillGroup,
       addressAutofillCheckbox,
       savedAddressesBtn,
     };
 
-    if (
-      FormAutofill.isAutofillCreditCardsAvailable &&
-      !FormAutofill.isAutofillCreditCardsHideUI
-    ) {
+    if (FormAutofill.isAutofillCreditCardsAvailable) {
       let creditCardAutofill = document.createXULElement("hbox");
       let creditCardAutofillCheckboxGroup = document.createXULElement("hbox");
       let creditCardAutofillCheckbox = document.createXULElement("checkbox");
       let creditCardAutofillLearnMore = document.createXULElement("label", {
         is: "text-link",
       });
       let savedCreditCardsBtn = document.createXULElement("button", {
         is: "highlightable-button",

--- a/browser/extensions/formautofill/test/browser/creditCard/browser_creditCard_telemetry.js
+++ b/browser/extensions/formautofill/test/browser/creditCard/browser_creditCard_telemetry.js
@@ -586,97 +586,8 @@ add_task(async function test_histogram()
     1: 1,
     2: 2,
   });
 
   await removeAllRecords();
 
   assertHistogram(CC_NUM_USES_HISTOGRAM, {});
 });
-
-add_task(async function test_submit_creditCard_new_with_hidden_ui() {
-  const AUTOFILL_CREDITCARDS_HIDE_UI_PREF =
-    "extensions.formautofill.creditCards.hideui";
-
-  Services.telemetry.clearEvents();
-  Services.telemetry.clearScalars();
-  Services.telemetry.getHistogramById(CC_NUM_USES_HISTOGRAM).clear();
-  Services.telemetry.setEventRecordingEnabled("creditcard", true);
-
-  await SpecialPowers.pushPrefEnv({
-    set: [
-      [CREDITCARDS_USED_STATUS_PREF, 0],
-      [AUTOFILL_CREDITCARDS_HIDE_UI_PREF, true],
-    ],
-  });
-
-  await saveCreditCard(TEST_CREDIT_CARD_1);
-
-  await BrowserTestUtils.withNewTab(
-    { gBrowser, url: CREDITCARD_FORM_URL },
-    async function(browser) {
-      await openPopupOn(browser, "form #cc-number").then(
-        () => {
-          return Promise.reject("Popup should not be displayed");
-        },
-        () => {
-          ok(true, "Popup has not been displayed");
-        }
-      );
-
-      await SpecialPowers.spawn(browser, [], async function() {
-        let form = content.document.getElementById("form");
-        let name = form.querySelector("#cc-name");
-
-        name.focus();
-        name.setUserInput("User 1");
-
-        form.querySelector("#cc-number").setUserInput("5038146897157463");
-        form.querySelector("#cc-exp-month").setUserInput("12");
-        form.querySelector("#cc-exp-year").setUserInput("2017");
-        form.querySelector("#cc-type").value = "mastercard";
-
-        // Wait 1000ms before submission to make sure the input value applied
-        await new Promise(resolve => content.setTimeout(resolve, 1000));
-        form.querySelector("input[type=submit]").click();
-      });
-
-      await sleep(1000);
-      is(PopupNotifications.panel.state, "closed", "Doorhanger is hidden");
-    }
-  );
-
-  SpecialPowers.clearUserPref(CREDITCARDS_USED_STATUS_PREF);
-  SpecialPowers.clearUserPref(ENABLED_AUTOFILL_CREDITCARDS_PREF);
-  SpecialPowers.clearUserPref(AUTOFILL_CREDITCARDS_HIDE_UI_PREF);
-
-  assertHistogram(CC_NUM_USES_HISTOGRAM, { 0: 1 });
-
-  let expected_content = [
-    ["creditcard", "detected", "cc_form"],
-    [
-      "creditcard",
-      "submitted",
-      "cc_form",
-      undefined,
-      {
-        fields_not_auto: "3",
-        fields_auto: "5",
-        fields_modified: "5",
-      },
-    ],
-  ];
-  await assertTelemetry(expected_content, []);
-  await removeAllRecords();
-
-  TelemetryTestUtils.assertScalar(
-    TelemetryTestUtils.getProcessScalars("content"),
-    "formautofill.creditCards.detected_sections_count",
-    1,
-    "There should be 1 sections detected."
-  );
-  TelemetryTestUtils.assertScalar(
-    TelemetryTestUtils.getProcessScalars("content"),
-    "formautofill.creditCards.submitted_sections_count",
-    1,
-    "There should be 1 section submitted."
-  );
-});

--- a/browser/extensions/formautofill/test/browser/creditCard/browser_privacyPreferences.js
+++ b/browser/extensions/formautofill/test/browser/creditCard/browser_privacyPreferences.js
@@ -209,47 +209,16 @@ add_task(async function test_creditCardN
           !content.document.querySelector(selectors.creditCardAutofillCheckbox),
           "Autofill credit cards checkbox should not exist"
         );
       });
     }
   );
 });
 
-add_task(async function test_creditCardHiddenUI() {
-  const AUTOFILL_CREDITCARDS_HIDE_UI_PREF =
-    "extensions.formautofill.creditCards.hideui";
-
-  await SpecialPowers.pushPrefEnv({
-    set: [[AUTOFILL_CREDITCARDS_HIDE_UI_PREF, true]],
-  });
-  let finalPrefPaneLoaded = TestUtils.topicObserved(
-    "sync-pane-loaded",
-    () => true
-  );
-  await BrowserTestUtils.withNewTab(
-    { gBrowser, url: PAGE_PRIVACY },
-    async function(browser) {
-      await finalPrefPaneLoaded;
-      await SpecialPowers.spawn(browser, [SELECTORS], selectors => {
-        is(
-          content.document.querySelector(selectors.group).hidden,
-          false,
-          "Form Autofill group should be visible"
-        );
-        ok(
-          !content.document.querySelector(selectors.creditCardAutofillCheckbox),
-          "Autofill credit cards checkbox should not exist"
-        );
-      });
-    }
-  );
-  SpecialPowers.clearUserPref(AUTOFILL_CREDITCARDS_HIDE_UI_PREF);
-});
-
 add_task(async function test_reauth() {
   await SpecialPowers.pushPrefEnv({
     set: [[AUTOFILL_CREDITCARDS_AVAILABLE_PREF, true]],
   });
   let { OSKeyStore } = ChromeUtils.import(
     "resource://gre/modules/OSKeyStore.jsm"
   );