uck <tony.luck@intel.com> 1128443280 -0700

[IA64-SGI] Remove references to the SN bist_lock

Remove all references to the bist_lock in the SN code as it
is not used for anything.

Signed-off-by: Dean Roe <roe@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
J