refactor: recentActions ajax call is redundant (#2722)

superset/assets/javascripts/profile/components/RecentActivity.jsx

@@ -1,7 +1,6 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import moment from 'moment';
-import $ from 'jquery';
 
 import TableLoader from './TableLoader';
 
@@ -10,18 +9,6 @@ const propTypes = {
 };
 
 export default class RecentActivity extends React.PureComponent {
-  constructor(props) {
-    super(props);
-    this.state = {
-      recentActions: [],
-    };
-  }
-
-  componentWillMount() {
-    $.get(`/superset/recent_activity/${this.props.user.userId}/`, (data) => {
-      this.setState({ recentActions: data });
-    });
-  }
   render() {
     const mutator = function (data) {
       return data.map(row => ({