ACPI: NFIT: Remove unnecessary .remove callback

The ACPI NFIT driver provides an empty function as it's .remove() callback
which is not necessary, so drop the empty acpi_nfit_remove() and the
.remove() callback initialization from it.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/nfit/core.c

@@ -3399,11 +3399,6 @@ static int acpi_nfit_add(struct acpi_device *adev)
 					adev);
 }
 
-static void acpi_nfit_remove(struct acpi_device *adev)
-{
-	/* see acpi_nfit_unregister */
-}
-
 static void acpi_nfit_update_notify(struct device *dev, acpi_handle handle)
 {
 	struct acpi_nfit_desc *acpi_desc = dev_get_drvdata(dev);
@@ -3485,7 +3480,6 @@ static struct acpi_driver acpi_nfit_driver = {
 	.ids = acpi_nfit_ids,
 	.ops = {
 		.add = acpi_nfit_add,
-		.remove = acpi_nfit_remove,
 	},
 };