* xselect.c (last_event_timestamp): Remove duplicate decl.

src/ChangeLog

 2011-05-12  Paul Eggert  <eggert@cs.ucla.edu>
 
+	* xselect.c (last_event_timestamp): Remove duplicate decl.
+
 	* xmenu.c (set_frame_menubar): Use int, not EMACS_UINT, for indexes
 	that always fit in int.  Use a sentinel instead of a counter, to
 	avoid a temp and to allay GCC's concerns about possible int overflow.

src/xselect.c

@@ -121,10 +121,6 @@ static Lisp_Object Qforeign_selection;
 
 #define SELECTION_QUANTUM(dpy) ((XMaxRequestSize(dpy) << 2) - 100)
 
-/* The timestamp of the last input event Emacs received from the X server.  */
-/* Defined in keyboard.c.  */
-extern unsigned long last_event_timestamp;
-
 /* This is an association list whose elements are of the form
      ( SELECTION-NAME SELECTION-VALUE SELECTION-TIMESTAMP FRAME)
    SELECTION-NAME is a lisp symbol, whose name is the name of an X Atom.