IPoIB/cm: Remove dead definition of struct ipoib_cm_id

#define IPOIB_CM_RX_DELAY       (3 * 256 * HZ)

#define IPOIB_CM_RX_UPDATE_MASK (0x3)

struct ipoib_cm_id {

	struct ib_cm_id *id;

	int flags;

	u32 remote_qpn;

	u32 remote_mtu;

};

static struct ib_qp_attr ipoib_cm_err_attr = {

	.qp_state = IB_QPS_ERR

};