cleanup: Remove unused callbacks

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3570>

clutter/clutter/clutter-actor-private.h

@@ -83,9 +83,7 @@ typedef ClutterActorTraverseVisitFlags (*ClutterTraverseCallback) (ClutterActor
  * @user_data: The private data specified when starting the iteration
  *
  * A generic callback for iterating over actor, such as with
- * _clutter_actor_foreach_child. The difference when compared to
+ * _clutter_actor_foreach_child.
- * #ClutterCallback is that it returns a boolean so it is possible to break
- * out of an iteration early.
  *
  * Return value: %TRUE to continue iterating or %FALSE to break iteration
  * early.

clutter/clutter/clutter-actor.h

@@ -56,24 +56,6 @@ G_DEFINE_AUTOPTR_CLEANUP_FUNC (ClutterActor, g_object_unref)
 typedef struct _ClutterActorClass    ClutterActorClass;
 typedef struct _ClutterActorPrivate  ClutterActorPrivate;
 
-/**
- * ClutterCallback:
- * @actor: a #ClutterActor
- * @data: (closure): user data
- *
- * Generic callback
- */
-typedef void (*ClutterCallback) (ClutterActor *actor,
-                                 gpointer      data);
-
-/**
- * CLUTTER_CALLBACK:
- * @f: a function
- *
- * Convenience macro to cast a function to #ClutterCallback
- */
-#define CLUTTER_CALLBACK(f)        ((ClutterCallback) (f))
-
 
 struct _ClutterActor
 {

clutter/clutter/clutter-binding-pool.c

@@ -429,7 +429,7 @@ clutter_binding_pool_find (const gchar *name)
  * @action_name: the name of the action
  * @key_val: key symbol
  * @modifiers: bitmask of modifiers
- * @callback: (type Clutter.BindingActionFunc): function to be called
+ * @callback: function to be called
  *   when the action is activated
  * @data: data to be passed to @callback
  * @notify: function to be called when the action is removed

clutter/clutter/clutter-binding-pool.h

@@ -42,27 +42,6 @@ G_DECLARE_FINAL_TYPE (ClutterBindingPool,
                       BINDING_POOL,
                       GObject)
 
-/**
- * ClutterBindingActionFunc:
- * @gobject: a #GObject
- * @action_name: the name of the action
- * @key_val: the key symbol
- * @modifiers: bitmask of the modifier flags
- * @user_data: data passed to the function
- *
- * The prototype for the callback function registered with
- * [method@Clutter.BindingPool.install_action] and invoked by
- * [method@Clutter.BindingPool.activate].
- *
- * Return value: the function should return %TRUE if the key
- *   binding has been handled, and return %FALSE otherwise
- */
-typedef gboolean (* ClutterBindingActionFunc) (GObject             *gobject,
-                                               const gchar         *action_name,
-                                               guint                key_val,
-                                               ClutterModifierType  modifiers,
-                                               gpointer             user_data);
-
 CLUTTER_EXPORT
 ClutterBindingPool *  clutter_binding_pool_new              (const gchar         *name);
 CLUTTER_EXPORT

src/backends/native/meta-kms-private.h

@@ -24,9 +24,6 @@
 #include "backends/native/meta-kms-types.h"
 #include "backends/native/meta-kms-types-private.h"
 
-typedef void (* MetaKmsCallback) (MetaKms  *kms,
-                                  gpointer  user_data);
-
 void meta_kms_queue_callback (MetaKms            *kms,
                               GMainContext       *main_context,
                               MetaThreadCallback  callback,