Removed unused display_name_badge

unused now that we have component specific badges

app/javascript/gabsocial/components/display_name_badge.js

@@ -1,17 +0,0 @@
-import React from 'react';
-import ImmutablePropTypes from 'react-immutable-proptypes';
-import PropTypes from 'prop-types';
-
-export default class DisplayNameBadge extends React.PureComponent {
-
-  static propTypes = {
-    label: PropTypes.string,
-  };
-
-  render() {
-  	const { label } = this.props;
-
-  	return <span className="display-name__badge">{label}</span>;
-  }
-
-}