x86/smpboot: remove redundant CONFIG_SCHED_SMT

On x86 CONFIG_SCHED_SMT is default y if SMP is enabled, so let's
simply drop CONFIG_SCHED_SMT.

Suggested-by: Thomas Gleixner <[email protected]>
Signed-off-by: Li Chen <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: K Prateek Nayak <[email protected]>
Tested-by: K Prateek Nayak <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: FirstLoveLife

arch/x86/kernel/smpboot.c

@@ -484,9 +484,7 @@ static void __init build_sched_topology(void)
 {
 	int i = 0;
 
-#ifdef CONFIG_SCHED_SMT
 	x86_topology[i++] = SDTL_INIT(cpu_smt_mask, cpu_smt_flags, SMT);
-#endif
 #ifdef CONFIG_SCHED_CLUSTER
 	x86_topology[i++] = SDTL_INIT(cpu_clustergroup_mask, x86_cluster_flags, CLS);
 #endif