Remove unused free() function

Since coreboot is running very short, we don't free memory.
Hence, drop (dummy) free()

Change-Id: I6e2737f07c6b9f73ebfad7d124b97a57cb7454a3
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1274
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/lib/malloc.c

@@ -45,9 +45,3 @@ void *malloc(size_t size)
 {
 	return memalign(sizeof(u64), size);
 }
-
-void free(void *where)
-{
-	/* Don't care */
-	MALLOCDBG("free %p\n", where);
-}