Revert "Autofocus on the poster list"

This reverts commit c206336c7b54f0855526991d13443b1b79c469f4.

It breaks the fuzzy search  while in the poster list. We need to find a
better solution to get the keyboard focus.

frontend/js/components/list/posters.js

@@ -116,14 +116,6 @@ export default class ListPosters extends React.PureComponent {
 class Posters extends React.PureComponent {
   constructor(props) {
     super(props);
-    this.posterRef = React.createRef();
-  }
-
-  componentDidUpdate() {
-    // Always focus on the poster list
-    if (this.posterRef.current != null) {
-      this.posterRef.current.focus();
-    }
   }
 
   move(event) {
@@ -185,7 +177,6 @@ class Posters extends React.PureComponent {
 
     return (
       <div tabIndex="0"
-          ref={this.posterRef}
           onKeyDown={(event) => this.move(event)}
           className="poster-list"
         >