Revert "Mm 1640 Fixed odd scrolling issues on channel refresh"

web/react/components/create_post.jsx

@@ -88,6 +88,7 @@ module.exports = React.createClass({
             );
         }
 
+        $('.post-list-holder-by-time').perfectScrollbar('update');
     },
     componentDidUpdate: function() {
         this.resizePostHolder();