Simplify bookmarks menu

chrome/userChrome.css

 /* Hide default multifoxContainer label */
 #urlbar #page-action-buttons #userContext-label[value="Default"] { display: none; }
 
+/* Hide second bookmarks separator */
+#BMB_bookmarksPopup > menuseparator:nth-of-type(2) { display: none; }
+
+/* Hide extra manage bookmarks button */
+#BMB_bookmarksPopup #BMB_bookmarksShowAll { display: none; }
+
 /* Shrink bookmark separators */
 #PlacesToolbarItems > toolbarseparator::before {
 	filter: opacity(0.3);