src/include: Remove min/max() from <stdlib.h>

Change-Id: I9ded44422a267e244343502dd5d6ab355e5a788d
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37378
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/include/stdlib.h

@@ -3,9 +3,6 @@
 
 #include <stddef.h>
 
-#define min(a, b) MIN((a), (b))
-#define max(a, b) MAX((a), (b))
-
 void *memalign(size_t boundary, size_t size);
 void *malloc(size_t size);
 /* We never free memory */