diff -r bf19378aed58 -r 54433cb371df ucx/list.h
--- a/ucx/list.h	Fri Nov 18 15:27:45 2016 +0100
+++ b/ucx/list.h	Fri Nov 18 16:00:15 2016 +0100
@@ -276,37 +276,6 @@
 UcxList *ucx_list_prepend_a(UcxAllocator *allocator, UcxList *list, void *data);
 
 /**
- * Inserts an element at the beginning of the list, if it is not present
- * in the list.
- * 
- * @param list the list where to insert the data or <code>NULL</code> to create
- * a new list
- * @param data the data to insert
- * @param cmpfnc the compare function
- * @param cmpdata additional data for the compare function
- * @return a pointer to the new list head
- * @see ucx_list_prepend()
- */
-UcxList *ucx_list_prepend_once(UcxList *list, void *data,
-        cmp_func cmpfnc, void *cmpdata);
-
-/**
- * Inserts an element at the beginning of the list, if it is not present in
- * the list, using a UcxAllocator.
- * 
- * @param allocator the allocator to use
- * @param list the list where to insert the data or <code>NULL</code> to create
- * a new list
- * @param data the data to insert
- * @param cmpfnc the compare function
- * @param cmpdata additional data for the compare function
- * @return a pointer to the new list head
- * @see ucx_list_prepend_a()
- */
-UcxList *ucx_list_prepend_once_a(UcxAllocator *allocator,
-        UcxList *list, void *data, cmp_func cmpfnc, void *cmpdata);
-
-/**
  * Concatenates two lists.
  * 
  * Either of the two arguments may be <code>NULL</code>.