cpumask: remove the now-obsoleted pcibus_to_cpumask(): alpha

cpumask_of_pcibus() is the new version.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/arch/alpha/include/asm/topology.h b/arch/alpha/include/asm/topology.h
index b4f284c..f5bd6cd 100644
--- a/arch/alpha/include/asm/topology.h
+++ b/arch/alpha/include/asm/topology.h
@@ -55,7 +55,6 @@
 	return &node_to_cpumask_map[node];
 }
 
-#define pcibus_to_cpumask(bus)	(cpu_online_map)
 #define cpumask_of_pcibus(bus)	(cpu_online_mask)
 
 #endif /* !CONFIG_NUMA */