mb/{msi,pcengines}: Remove unused <stdlib.h>

Change-Id: I282d02d58a5740369371a6f0bbdf7e900e3edc56
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33895
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/mainboard/msi/ms7721/BiosCallOuts.c

@@ -19,7 +19,6 @@
 #include <northbridge/amd/agesa/state_machine.h>
 
 #include <vendorcode/amd/agesa/f15tn/Proc/Fch/FchPlatform.h>
-#include <stdlib.h>
 
 const BIOS_CALLOUT_STRUCT BiosCallouts[] =
 {

src/mainboard/msi/ms7721/buildOpts.c

@@ -25,7 +25,6 @@
  *
  */
 
-#include <stdlib.h>
 
 #include <vendorcode/amd/agesa/f15tn/AGESA.h>
 

src/mainboard/pcengines/apu1/BiosCallOuts.c

@@ -18,7 +18,6 @@
 #include <spd_bin.h>
 #include <northbridge/amd/agesa/BiosCallOuts.h>
 #include <SB800.h>
-#include <stdlib.h>
 
 #include "gpio_ftns.h"
 

src/mainboard/pcengines/apu1/buildOpts.c

@@ -25,7 +25,6 @@
  *
  */
 
-#include <stdlib.h>
 
 
 /*	Select the CPU family.	*/

src/mainboard/pcengines/apu2/BiosCallOuts.c

@@ -19,7 +19,6 @@
 #include <northbridge/amd/agesa/BiosCallOuts.h>
 #include <northbridge/amd/agesa/state_machine.h>
 #include <FchPlatform.h>
-#include <stdlib.h>
 
 #include "gpio_ftns.h"
 #include "imc.h"