S2io: Cleanup - removed unused variable intr_type

- Removed the unused variable, intr_type, in device private structure.

[ Resolve conflicts with napi_struct changes... -DaveM ]

Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com>
Signed-off-by: Santosh Rastapur <santosh.rastapur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>