tree: Drop duplicated <stdarg.h> and <stdio.h>

<string.h> is supposed to provide <stdarg.h> and <stdio.h>

Change-Id: I021ba535ba5ec683021c4dfc41ac18d9cebbcfd2
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81853
Reviewed-by: Eric Lai <ericllai@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/console/vsprintf.c

@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <console/vtxprintf.h>
-#include <stdarg.h>
 #include <string.h>
 
 struct vsnprintf_context {

src/console/vtxprintf.c

@@ -6,7 +6,6 @@
 
 #include <console/vtxprintf.h>
 #include <ctype.h>
-#include <stdarg.h>
 #include <string.h>
 #include <types.h>
 

src/cpu/x86/smm/smm_module_loader.c

@@ -11,7 +11,6 @@
 #include <device/mmio.h>
 #include <rmodule.h>
 #include <smmstore.h>
-#include <stdio.h>
 #include <string.h>
 #include <types.h>
 

src/device/pci_rom.c

@@ -6,7 +6,6 @@
 #include <device/pci.h>
 #include <device/pci_ids.h>
 #include <device/pci_ops.h>
-#include <stdio.h>
 #include <string.h>
 #include <cbfs.h>
 #include <cbmem.h>

src/drivers/ocp/dmi/smbios.c

@@ -6,7 +6,6 @@
 #include <delay.h>
 #include <cpu/x86/mp.h>
 #include <timer.h>
-#include <stdio.h>
 #include <string.h>
 #include <soc/soc_util.h>
 #include <soc/util.h>

src/mainboard/ocp/deltalake/ramstage.c

@@ -20,7 +20,6 @@
 #include <soc/smmrelocate.h>
 #include <soc/soc_util.h>
 #include <soc/util.h>
-#include <stdio.h>
 #include <string.h>
 #include <types.h>
 

tests/lib/string-test.c

@@ -5,7 +5,6 @@
 #include <stdint.h>
 #include <stddef.h>
 #include <tests/test.h>
-#include <stdio.h>
 
 /*
  * Important note: In every particular test, don't use any string-related