platform/x86: hp-bioscfg: Remove unused obj in hp_add_other_attributes()

acpi_object *obj is unused in this function, so delete it, also
delete a unnecessary kfree(obj);

Signed-off-by: Harshit Mogalapalli <[e-mail]>
Reviewed-by: Ilpo Järvinen <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Ilpo Järvinen <[e-mail]>

drivers/platform/x86/hp/hp-bioscfg/bioscfg.c

···
 static int hp_add_other_attributes(int attr_type)
 {
 	struct kobject *attr_name_kobj;
-	union acpi_object *obj = NULL;
 	int ret;
 	char *attr_name;
 
···
 	kobject_put(attr_name_kobj);
 unlock_drv_mutex:
 	mutex_unlock(&bioscfg_drv.mutex);
-	kfree(obj);
 	return ret;
 }