IB/hfi1: Remove unused define

The patch noted in Fixes missed deleting the define it obsoleted.

Fixes: da9de5f8 ("IB/hfi1: Close PSM sdma_progress sleep window")
Link: https://lore.kernel.org/r/20190715164552.74174.99396.stgit@awfm-01.aw.intel.com


Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>