thermal: int3400: Remove unneeded data_vault attribute_group

The group only contains a single entry and the conditionals around its
lifecycle make clear that this won't change.

Remove the unnecessary group.

This saves some memory and it's easier to read.

The removal of a non-const bin_attribute[] instance is also a
preparation for the constification of struct bin_attributes.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20241121-sysfs-const-bin_attr-int340x_thermal-v1-1-2436facf9dae@weissschuh.net
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/thermal/intel/int340x_thermal/int3400_thermal.c

@@ -75,11 +75,6 @@ struct odvp_attr {
 
 static BIN_ATTR_SIMPLE_RO(data_vault);
 
-static struct bin_attribute *data_attributes[] = {
-	&bin_attr_data_vault,
-	NULL,
-};
-
 static ssize_t imok_store(struct device *dev, struct device_attribute *attr,
 			  const char *buf, size_t count)
 {
@@ -108,10 +103,6 @@ static const struct attribute_group imok_attribute_group = {
 	.attrs = imok_attr,
 };
 
-static const struct attribute_group data_attribute_group = {
-	.bin_attrs = data_attributes,
-};
-
 static ssize_t available_uuids_show(struct device *dev,
 				    struct device_attribute *attr,
 				    char *buf)
@@ -624,8 +615,7 @@ static int int3400_thermal_probe(struct platform_device *pdev)
 	}
 
 	if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
-		result = sysfs_create_group(&pdev->dev.kobj,
-					    &data_attribute_group);
+		result = device_create_bin_file(&pdev->dev, &bin_attr_data_vault);
 		if (result)
 			goto free_uuid;
 	}
@@ -648,7 +638,7 @@ static int int3400_thermal_probe(struct platform_device *pdev)
 free_sysfs:
 	cleanup_odvp(priv);
 	if (!ZERO_OR_NULL_PTR(priv->data_vault)) {
-		sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group);
+		device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
 		kfree(priv->data_vault);
 	}
 free_uuid:
@@ -683,7 +673,7 @@ static void int3400_thermal_remove(struct platform_device *pdev)
 		acpi_thermal_rel_misc_device_remove(priv->adev->handle);
 
 	if (!ZERO_OR_NULL_PTR(priv->data_vault))
-		sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group);
+		device_remove_bin_file(&pdev->dev, &bin_attr_data_vault);
 	sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
 	sysfs_remove_group(&pdev->dev.kobj, &imok_attribute_group);
 	thermal_zone_device_unregister(priv->thermal);