staging: rdma: hfi1: remove unnecessary out of memory messages

Out of memory messages are unnecssary in the drivers as they are
reported by memory management.

Addresses checkpatch.pl: WARNING: Possible unnecessary 'out of memory' message

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>