(Sent upstream)

The Myricom GB driver firmware is no longer in use. Furthermore,
CONFIG_MYRI_SBUS is no longer defined.

Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: James Bottomley <JBottomley@Parallels.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>