RDMA/nes: Remove second wait queue initialization call

The same wait queue is initialized a couple of lines above.

Fixes: 3c2d774c ("RDMA/nes: Add a driver for NetEffect RNICs")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>