Move remaining actions over to use redux and v4 endpoints (#6720)

webapp/components/user_settings/email_notification_setting.jsx

@@ -1,11 +1,10 @@
-import PropTypes from 'prop-types';
-
 // Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
 // See License.txt for license information.
 
 import React from 'react';
+import PropTypes from 'prop-types';
 
-import {savePreference} from 'utils/async_client.jsx';
+import {savePreference} from 'actions/user_actions.jsx';
 import PreferenceStore from 'stores/preference_store.jsx';
 import {localizeMessage} from 'utils/utils.jsx';