x86: don't set maps in native_smp_prepare_boot_cpu()

By this time, they are already set in init routines
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/smpboot_32.c

@@ -889,10 +889,7 @@ void __init native_smp_prepare_boot_cpu(void)
 	init_gdt(cpu);
 	switch_to_new_gdt();
 
-	cpu_set(cpu, cpu_online_map);
 	cpu_set(cpu, cpu_callout_map);
-	cpu_set(cpu, cpu_present_map);
-	cpu_set(cpu, cpu_possible_map);
 	__get_cpu_var(cpu_state) = CPU_ONLINE;
 }