--- a/browser/base/content/browser-places.js
+++ b/browser/base/content/browser-places.js
@@ -1402,43 +1402,16 @@ var BookmarkingUI = {
       item.addEventListener("command", onItemCommand);
       if (icon) {
         item.setAttribute("image", icon);
       }
       fragment.appendChild(item);
     }
     root.containerOpen = false;
     aHeaderItem.parentNode.insertBefore(fragment, aHeaderItem.nextSibling);
-
-    // Update the menu when a bookmark is being removed.
-    // The native menubar on Mac doesn't support live update, so this won't
-    // work there.
-    let observer = {
-      onItemAdded() {},
-      onBeginUpdateBatch() {},
-      onEndUpdateBatch() {},
-      onItemRemoved() {
-        removeObserver();
-        BookmarkingUI._updateRecentBookmarks(aHeaderItem, extraCSSClass);
-      },
-      onItemChanged() {},
-      onItemVisited() {},
-      onItemMoved() {}
-    };
-    PlacesUtils.bookmarks.addObserver(observer, false);
-
-    let popup = aHeaderItem.parentNode;
-    let removeObserver = function (event) {
-      if (event && event.target != popup) {
-        return;
-      }
-      PlacesUtils.bookmarks.removeObserver(observer);
-      popup.removeEventListener("popuphidden", removeObserver);
-    };
-    popup.addEventListener("popuphidden", removeObserver);
   },
 
   /**
    * Handles star styling based on page proxy state changes.
    */
   onPageProxyStateChanged: function BUI_onPageProxyStateChanged(aState) {
     if (!this._shouldUpdateStarState() || !this.star) {
       return;