sched_unlock: remove redundant/stale logic and comment

sched/sched/sched_unlock.c

@@ -98,38 +98,14 @@ int sched_unlock(void)
           sched_note_premption(rtcb, false);
 #endif
 
-          /* Set the lock count to zero */
-
-          rtcb->lockcount = 0;
-
           /* Release any ready-to-run tasks that have collected in
            * g_pendingtasks.
            *
            * NOTE: This operation has a very high likelihood of causing
            * this task to be switched out!
            */
 
-          /* In the SMP case, the tasks remains pend(1) if we are
-           * in a critical section, i.e., g_cpu_irqlock is locked by other
-           * CPUs, or (2) other CPUs still have pre-emption disabled, i.e.,
-           * g_cpu_lockset is locked.  In those cases, the release of the
-           * pending tasks must be deferred until those conditions are met.
-           *
-           * There are certain conditions that we must avoid by preventing
-           * releasing the pending tasks while within the critical section
-           * of other CPUs.  This logic does that and there is matching
-           * logic in nxsched_add_readytorun to avoid starting new tasks
-           * within the critical section (unless the CPU is the holder of
-           * the lock).
-           *
-           * REVISIT: If this CPU is only one that holds the IRQ lock, then
-           * we should go ahead and release the pending tasks.  See the logic
-           * leave_critical_section():  It will call nxsched_merge_pending()
-           * BEFORE it clears IRQ lock.
-           */
-
-          if (!nxsched_islocked_tcb(rtcb) &&
-              list_pendingtasks()->head != NULL)
+          if (list_pendingtasks()->head != NULL)
             {
               if (nxsched_merge_pending())
                 {
@@ -247,10 +223,6 @@ int sched_unlock(void)
           sched_note_premption(rtcb, false);
 #endif
 
-          /* Set the lock count to zero */
-
-          rtcb->lockcount = 0;
-
           /* Release any ready-to-run tasks that have collected in
            * g_pendingtasks.
            *