src/superio: Remove unused include <stdlib.h>

Change-Id: I941c3d80d6b822b12a2d0c279415ab0c6b7f375b
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37379
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/src/superio/fintek/f81803a/superio.c b/src/superio/fintek/f81803a/superio.c
index 1cb31bf..5a54f54 100644
--- a/src/superio/fintek/f81803a/superio.c
+++ b/src/superio/fintek/f81803a/superio.c
@@ -17,7 +17,6 @@
 #include <device/device.h>
 #include <device/pnp.h>
 #include <superio/conf_mode.h>
-#include <stdlib.h>
 #include <pc80/keyboard.h>
 #include "f81803a.h"
 
diff --git a/src/superio/nuvoton/nct5539d/superio.c b/src/superio/nuvoton/nct5539d/superio.c
index 45187ac..04461b3 100644
--- a/src/superio/nuvoton/nct5539d/superio.c
+++ b/src/superio/nuvoton/nct5539d/superio.c
@@ -22,7 +22,6 @@
 #include <device/device.h>
 #include <device/pnp.h>
 #include <pc80/keyboard.h>
-#include <stdlib.h>
 #include <superio/conf_mode.h>
 #include "nct5539d.h"