nes: remove unused 'timeval' struct member

There is a stale entry in nes_cm_tcp_context that has apparently
never been used in mainline linux.

I'm trying to kill off all users of timeval as part of the
y2038-safety work, so let's just remove this one.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/nes/nes_cm.h

@@ -279,7 +279,6 @@ struct nes_cm_tcp_context {
 	u8  rcv_wscale;
 
 	struct nes_cm_tsa_context tsa_cntxt;
-	struct timeval            sent_ts;
 };