diff -r 921f83a8943f -r d218607f5a7e src/ucx/cx/allocator.h
--- a/src/ucx/cx/allocator.h	Sat Mar 25 17:18:51 2023 +0100
+++ b/src/ucx/cx/allocator.h	Fri May 05 18:02:11 2023 +0200
@@ -133,41 +133,6 @@
 ) __attribute__((__nonnull__(2)));
 
 /**
- * Structure holding an advanced destructor function and the desired payload.
- * Invocations of func should use data as first argument.
- */
-typedef struct {
-    /**
-     * A pointer to the data that SHALL be used to invoke func.
-     */
-    void *data;
-    /**
-     * A pointer to the function to invoke.
-     */
-    cx_destructor_func2 func;
-} cx_advanced_destructor;
-
-/**
- * Specifies the type of destructor to use.
- */
-enum cx_destructor_type {
-    /**
-     * Do not use a destructor function.
-     */
-    CX_DESTRUCTOR_NONE,
-    /**
-     * Use a simple destructor.
-     * @see cx_destructor_func
-     */
-    CX_DESTRUCTOR_SIMPLE,
-    /**
-     * Use an advanced destructor.
-     * @see cx_advanced_destructor
-     */
-    CX_DESTRUCTOR_ADVANCED
-};
-
-/**
  * Allocate \p n bytes of memory.
  *
  * @param allocator the allocator