vfio: Drop owner assignment from platform_driver

platform_driver does not need to set an owner because
platform_driver_register() will set it.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Baptiste Reynal <[e-mail]>
Signed-off-by: Alex Williamson <[e-mail]>

drivers/vfio/platform/vfio_platform.c

···
 	.remove		= vfio_platform_remove,
 	.driver	= {
 		.name	= "vfio-platform",
-		.owner	= THIS_MODULE,
 	},
 };