media: staging: Drop starfive-camss from staging

media: staging: Drop starfive-camss from staging

The starfive-camss driver is no longer being worked upon for destaging,
as confirmed by the maintainer, so drop it.

Link: https://lore.kernel.org/all/ZQ0PR01MB13024A92926C415C187D2C18F29F2@ZQ0PR01MB1302.CHNPR01.prod.partner.outlook.cn/
Acked-by: Changhuang Liang <changhuang.liang@starfivetech.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>