tree: Drop unused <post.h>

Change-Id: Ic7f6690786661e523292f7382df71ae4ad04d593
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81815
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Varshit Pandya <pandyavarshit@gmail.com>

src/soc/amd/common/psp_verstage/post.c

@@ -2,7 +2,6 @@
 
 #include <bl_uapp/bl_syscall_public.h>
 #include <console/console.h>
-#include <post.h>
 
 void arch_post_code(u8 value)
 {

src/soc/intel/xeon_sp/chip_common.c

@@ -5,7 +5,6 @@
 #include <console/console.h>
 #include <device/pci.h>
 #include <intelblocks/acpi.h>
-#include <post.h>
 #include <soc/acpi.h>
 #include <soc/chip_common.h>
 #include <soc/soc_util.h>

src/soc/intel/xeon_sp/chip_gen1.c

@@ -8,7 +8,6 @@
 #include <device/pci_def.h>
 #include <soc/pci_devs.h>
 #include <intelblocks/acpi.h>
-#include <post.h>
 #include <soc/acpi.h>
 #include <soc/chip_common.h>
 #include <soc/soc_util.h>