sched/init: Remove the duplicated tcb flag/cpu setting in nx_smp_start

The same thing is already done in nx_start

sched/init/nx_smpstart.c

@@ -55,24 +55,6 @@
 
 #ifdef CONFIG_SMP
 
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-struct nx_tcballoc_s
-{
-  struct task_tcb_s tcb;  /* IDLE task TCB */
-  FAR char *idleargv[2];  /* Argument list */
-};
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-#if CONFIG_TASK_NAME_SIZE < 1
-static const char g_idlename[] = "CPUn Idle"
-#endif
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -219,14 +201,6 @@ int nx_smp_start(void)
        */
 
       up_initial_state(tcb);
-
-      /* Set the task flags to indicate that this is a kernel thread and that
-       * this task is locked to this CPU.
-       */
-
-      tcb->flags = (TCB_FLAG_TTYPE_KERNEL | TCB_FLAG_NONCANCELABLE |
-                    TCB_FLAG_CPU_LOCKED);
-      tcb->cpu   = cpu;
     }
 
   /* Then start all of the other CPUs after we have completed the memory

sched/init/nx_start.c

@@ -389,11 +389,7 @@ static FAR char *g_idleargv[1][2];
 
 void nx_start(void)
 {
-#ifdef CONFIG_SMP
-  int cpu;
-#else
-# define cpu 0
-#endif
+  int cpu = 0;
   int i;
 
   sinfo("Entry\n");