Tidy up duplication of MIN/MAX fallback implementations (#20236)

quantum/midi/midi.c

@@ -18,10 +18,7 @@
 
 #include "midi.h"
 #include <string.h> //for memcpy
-
-#ifndef MIN
-#    define MIN(x, y) (((x) < (y)) ? (x) : (y))
-#endif
+#include "util.h"
 
 #ifndef NULL
 #    define NULL 0