staging: rdma: hfi1: Remove hfi1_nomsix() wrapper function

This patch removes hfi1_nomsix() wrapper function that is used to wrap
pci_disable_msix() and so substituted the wrapper function by a direct
call to pci_disable_msix().

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>