Remove free plan feature flag

[MAILPOET-2098]

assets/js/src/newsletters/listings/heading.jsx

@@ -5,10 +5,7 @@ import FreePlanAnnouncement from 'announcements/free_plan_announcement.jsx';
 
 const ListingHeading = () => (
   <div>
-    {
-      MailPoet.FeaturesController.isSupported('new-free-plan')
-      && <FreePlanAnnouncement />
-    }
+    <FreePlanAnnouncement />
 
     <h1 className="title">
       {MailPoet.I18n.t('pageTitle')}

lib/Features/FeaturesController.php

@@ -9,13 +9,11 @@ class FeaturesController {
   // Define features below in the following form:
   //   const FEATURE_NAME_OF_FEATURE = 'name-of-feature';
   const FEATURE_DISPLAY_WOOCOMMERCE_REVENUES = 'display-woocommerce-revenues'; // may also have 'display_revenues' setting
-  const FEATURE_NEW_FREE_PLAN = 'new-free-plan';
 
   // Define feature defaults in the array below in the following form:
   //   self::FEATURE_NAME_OF_FEATURE => true,
   private $defaults = [
     self::FEATURE_DISPLAY_WOOCOMMERCE_REVENUES => false,
-    self::FEATURE_NEW_FREE_PLAN => false,
   ];
 
   /** @var array */

tests/acceptance/FreePlanAnnouncementCest.php

@@ -11,7 +11,6 @@ class FreePlanAnnouncementCest {
   const NOTICE_SELECTOR = '[data-automation-id="free-plan-announcement"]';
 
   function showAndCloseNotice(\AcceptanceTester $I) {
-    (new Features())->withFeatureEnabled(FeaturesController::FEATURE_NEW_FREE_PLAN);
     $I->wantTo('Show and close free plan announcement');
     $I->login();
     $I->amOnMailPoetPage('Emails');