make MemberTiles actually update in realtime\n\nFixes https://github.com/vector-im/vector-web/issues/730 and all its dups

src/components/views/rooms/MemberTile.js

@@ -93,7 +93,6 @@ module.exports = React.createClass({
         return (
             <EntityTile {...this.props} presenceActiveAgo={active} presenceState={presenceState}
                 avatarJsx={av} title={this.getPowerLabel()} onClick={this.onClick}
-                shouldComponentUpdate={this.shouldComponentUpdate.bind(this)}
                 name={name} powerLevel={this.props.member.powerLevel} />
         );
     }