Remove unused isCPU0 function.
Remove unused isCPU0 function.

Change-Id: I07c49d54352565061be3810bcd02217c95117f9d
Reviewed-on: http://localhost:8080/gerrit/2
Reviewed-by: ALWOOD P. WILLIAMS III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>
Tested-by: Jenkins Server

Over-enthusiastic/hostboot,csmart/hostboot,alvintpwang/hostboot,alvintpwang/hostboot,csmart/hostboot,Over-enthusiastic/hostboot,open-power/hostboot,Over-enthusiastic/hostboot,csmart/hostboot,csmart/hostboot,open-power/hostboot,alvintpwang/hostboot,csmart/hostboot,open-power/hostboot,Over-enthusiastic/hostboot,alvintpwang/hostboot,open-power/hostboot,alvintpwang/hostboot,Over-enthusiastic/hostboot,open-power/hostboot