--- /home/fsouto/Downloads/moodle/lib/db/services.php	2011-12-06 09:21:44.000000000 +0000
+++ lib/db/services.php	2011-12-27 11:47:23.384946175 +0000
@@ -368,6 +368,15 @@
 
     // === course related functions ===
 
+    'core_course_delete_categories' => array(
+        'classname'   => 'core_course_external',
+        'methodname'  => 'delete_categories',
+        'classpath'   => 'course/externallib.php',
+        'description' => 'Delete course categories',
+        'type'        => 'write',
+        'capabilities'=> 'moodle/category:manage',
+    ),
+
     'moodle_course_get_courses' => array(
         'classname'   => 'core_course_external',
         'methodname'  => 'get_courses',