This function has been deprecated. That means it has been replaced by a new function or is no longer supported, and may be removed from future versions. All code that uses this function should be converted to use its replacement if one exists. See also wp-includes/deprecated.php.
Use
any of these functions instead.
Synopsis
void unregister_widget_control ( string name )
Removes a widget’s admin callback.
Related
Widgets:
is_active_widget(),
the_widget(),
register_widget(),
unregister_widget(),
wp_register_widget_control(),
wp_unregister_widget_control(),
wp_convert_widget_settings(),
wp_get_widget_defaults(),
wp_widget_description()