[gdk] Remove deprecated gdktypes stuff.

docs/reference/gdk/gdk-sections.txt

@@ -1196,7 +1196,6 @@ gdk_cursor_get_type
 gdk_input_add_full
 GdkInputCondition
 GdkInputFunction
-GdkDestroyNotify
 gdk_input_add
 gdk_input_remove
 

docs/reference/gdk/tmpl/input.sgml

@@ -72,16 +72,6 @@ occurs.
 @condition: the triggering condition.
 
 
-<!-- ##### USER_FUNCTION GdkDestroyNotify ##### -->
-<para>
-A callback function called when a piece of user data is 
-no longer being stored by GDK. Will typically free the
-structure or object that @data points to.
-</para>
-
-@data: the user data.
-
-
 <!-- ##### FUNCTION gdk_input_add ##### -->
 
 

gdk/gdktypes.h

@@ -185,12 +185,6 @@ typedef void (*GdkInputFunction) (gpointer	    data,
 				  gint		    source,
 				  GdkInputCondition condition);
 
-#ifndef GDK_DISABLE_DEPRECATED
-
-typedef void (*GdkDestroyNotify) (gpointer data);
-
-#endif /* GDK_DISABLE_DEPRECATED */
-
 struct _GdkPoint
 {
   gint x;