sys/util.h: remove deprecated MACRO_MAP()

Since this is an experimental API and MACRO_MAP() was deprecated in
favor of FOR_EACH() in zephyr v2.3.0, we are within our rights to just
remove it without notice now. Do so and mention it in the release
notes.

Signed-off-by: Martí Bolívar <[email protected]>

Author: mbolivar-nordic

doc/releases/release-notes-2.4.rst

@@ -48,6 +48,10 @@ Deprecated in this release
 Removed APIs in this release
 ============================
 
+* Other
+
+  * The deprecated ``MACRO_MAP`` macro has been removed from the
+    :ref:`util_api`. Use ``FOR_EACH`` instead.
 
 Stable API changes in this release
 ==================================

include/sys/util.h

@@ -724,19 +724,6 @@ uint8_t u8_to_dec(char *buf, uint8_t buflen, uint8_t value);
 	20, 19, 18, 17, 16, 15, 14, 13, 12, 11,		 \
 	10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, ~)
 
-/**
- * Equivalent to FOR_EACH(F, (), ...).
- *
- * @deprecated Use FOR_EACH instead.
- *
- * @param F   Macro name to be used for argument processing Macro should have
- *	      following form: MACRO(argument).
- * @param ... Arguments to process.
- *
- * @return All arguments processed by given macro
- */
-#define MACRO_MAP(F, ...) __DEPRECATED_MACRO FOR_EACH(F, (), __VA_ARGS__)
-
 /**
  * @brief Mapping macro that pastes results together
  *