revert 22226 as it caused some ui test crashes

chrome/browser/gtk/bookmark_bubble_gtk.h

Index: chrome/browser/gtk/bookmark_bubble_gtk.h
===================================================================
--- chrome/browser/gtk/bookmark_bubble_gtk.h	(revision 22227)
+++ chrome/browser/gtk/bookmark_bubble_gtk.h	(working copy)
@@ -126,9 +126,6 @@
   // when the widget is destroyed (when the InfoBubble is destroyed).
   GtkWidget* content_;
 
-  // The button that removes the bookmark.
-  GtkWidget* remove_button_;
-
   // The various labels in the interface. We keep track of them for theme
   // changes.
   std::vector<GtkWidget*> labels_;