Prevent to disclose static function in the header file

Signed-off-by: OBATA Akio <obache@wizdas.com>
(cherry picked from commit 52200a5d4d)

src/get-carddav-report.h

@@ -25,14 +25,6 @@
 #include "carddav.h"
 #include <glib.h>
 
-/**
- * Function for getting a WebDAV directory listing.
- * @param settings A pointer to carddav_settings. @see carddav_settings
- * @param error A pointer to carddav_error. @see carddav_error
- * @return string containing list of href elements for search
- */
-static gchar* carddav_dirlist(carddav_settings* settings, carddav_error* error);
-
 /**
  * Function for getting all cards from collection.
  * @param settings A pointer to carddav_settings. @see carddav_settings