Always show warning if an app requires email to be enabled for the selected domain

We can be smarter in the future and show this based on currently
selected domain from the dropdown

webadmin/src/views/appstore.js

@@ -18,7 +18,6 @@ angular.module('Application').controller('AppStoreController', ['$scope', '$loca
     $scope.searchString = '';
     $scope.validAppstoreAccount = false;
     $scope.appstoreConfig = null;
-    $scope.mailConfig = {};
 
     $scope.showView = function (view) {
         // wait for dialog to be fully closed to avoid modal behavior breakage when moving to a different view already
@@ -527,14 +526,6 @@ angular.module('Application').controller('AppStoreController', ['$scope', '$loca
         });
     }
 
-    function getMailConfig() {
-        Client.getMailConfig(function (error, mailConfig) {
-            if (error) return console.error(error);
-
-            $scope.mailConfig = mailConfig;
-        });
-    }
-
     function init() {
         $scope.ready = false;
 
@@ -548,7 +539,6 @@ angular.module('Application').controller('AppStoreController', ['$scope', '$loca
 
             fetchUsers();
             fetchGroups();
-            getMailConfig();
 
             // domains is required since we populate the dropdown with domains[0]
             Client.getDomains(function (error, result) {