Avoid wrong scrolling when calling zoomReset

The goal of this patch is to fix the test:
https://searchfox.org/mozilla-central/source/toolkit/components/pdfjs/test/browser_pdfjs_zoom.js

It's a regression due to #17790.

web/annotation_editor_layer_builder.js

@@ -127,7 +127,6 @@ class AnnotationEditorLayerBuilder {
       return;
     }
     this.annotationEditorLayer.destroy();
-    this.div.remove();
   }
 
   hide() {