src/southbridge: Remove unused <delay.h>

Found using:
diff <(git grep -l '#include <delay.h>' -- src/) <(git grep -l 'get_timer_fsb(\|init_timer(\|udelay(\|mdelay(\|delay(' -- src/) |grep "<"

Change-Id: If7751b0e7d222979973518f57b310f5e2fe2bc25
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60601
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/southbridge/intel/bd82x6x/me.c

@@ -17,7 +17,6 @@
 #include <console/console.h>
 #include <device/pci_ids.h>
 #include <device/pci_def.h>
-#include <delay.h>
 #include <elog.h>
 #include <halt.h>
 #include <option.h>

src/southbridge/intel/bd82x6x/me_8.x.c

@@ -18,7 +18,6 @@
 #include <device/pci_ids.h>
 #include <device/pci_def.h>
 #include <string.h>
-#include <delay.h>
 #include <elog.h>
 #include <halt.h>
 #include <option.h>

src/southbridge/intel/i82801ix/azalia.c

@@ -6,7 +6,6 @@
 #include <device/pci_ids.h>
 #include <device/pci_ops.h>
 #include <device/mmio.h>
-#include <delay.h>
 #include <device/azalia_device.h>
 #include "chip.h"
 #include "i82801ix.h"

src/southbridge/intel/i82801jx/azalia.c

@@ -6,7 +6,6 @@
 #include <device/pci_ids.h>
 #include <device/pci_ops.h>
 #include <device/mmio.h>
-#include <delay.h>
 #include <device/azalia_device.h>
 #include "chip.h"
 #include "i82801jx.h"

src/southbridge/intel/lynxpoint/hda_verb.c

@@ -3,7 +3,6 @@
 #include <console/console.h>
 #include <device/azalia_device.h>
 #include <device/mmio.h>
-#include <delay.h>
 
 #include "hda_verb.h"
 

src/southbridge/intel/lynxpoint/pch.c

@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <console/console.h>
-#include <delay.h>
 #include <device/pci_ops.h>
 #include <device/device.h>
 #include <device/pci.h>