Removing old ACPI loader, which isn't used in Haiku.

ACPI hasn't been tested on BeOS in ages. So time to remove
old BeOS code.

src/add-ons/kernel/drivers/disk/Jamfile

@@ -1,6 +1,5 @@
 SubDir HAIKU_TOP src add-ons kernel drivers disk ;
 
-SubInclude HAIKU_TOP src add-ons kernel drivers disk acpi_loader ;
 SubInclude HAIKU_TOP src add-ons kernel drivers disk floppy ;
 SubInclude HAIKU_TOP src add-ons kernel drivers disk scsi ;
 SubInclude HAIKU_TOP src add-ons kernel drivers disk usb ;

src/add-ons/kernel/drivers/disk/acpi_loader/Jamfile

@@ -1,15 +0,0 @@
-SubDir HAIKU_TOP src add-ons kernel drivers disk acpi_loader ;
-
-SetSubDirSupportedPlatformsBeOSCompatible ;
-
-if $(TARGET_PLATFORM) != haiku {
-	# Needed for <ACPI.h>. Unfortunately we also get the other headers there,
-	# that we don't really want.
-	UsePublicHeaders drivers ;
-}
-
-KernelAddon acpi_loader :
-	acpi_loader.c
-	;
-
-Depends acpi_loader : acpi ;

src/add-ons/kernel/drivers/disk/acpi_loader/acpi_loader.c

@@ -1,56 +0,0 @@
-/*
- * R5 ACPI Loader. This needs to happen as soon as possible in the boot process
- * so we have to break convention and place it here.
- */
-
-#include <KernelExport.h>
-#include <Drivers.h>
-#include <Errors.h>
-
-#include <ACPI.h>
-
-acpi_module_info *acpi;
-
-status_t
-init_hardware (void)
-{
-	return B_OK;
-}
-
-status_t
-init_driver (void)
-{
-	return get_module(B_ACPI_MODULE_NAME, (module_info**)&acpi);
-}
-
-void
-uninit_driver (void)
-{
-	put_module(B_ACPI_MODULE_NAME);
-}
-
-static const char *acpi_loader_name[] = {
-	NULL
-};
-
-device_hooks acpi_loader_hooks = {
-	NULL, /* open */
-	NULL, /* close */
-	NULL, /* free */
-	NULL, /* control */
-	NULL, /* read */
-	NULL, /* write */
-	NULL, NULL, NULL, NULL
-};
-
-const char**
-publish_devices()
-{
-	return acpi_loader_name;
-}
-
-device_hooks*
-find_device(const char* name)
-{
-	return &acpi_loader_hooks;
-}