Revert "[Boottime] add syslog info in system bootup stages"

This reverts commit b8423e9681.

sched/init/nx_bringup.c

@@ -252,7 +252,6 @@ static inline void nx_start_application(void)
    */
 
   sinfo("Starting init thread\n");
-  syslog(LOG_INFO, "Starting init thread\n");
 
 #ifdef CONFIG_BUILD_PROTECTED
   DEBUGASSERT(USERSPACE->us_entrypoint != NULL);

sched/init/nx_start.c

@@ -345,7 +345,6 @@ void nx_start(void)
   int i;
 
   sinfo("Entry\n");
-  syslog(LOG_INFO, "NuttX RTOS Initializtion Entry\n");
 
   /* Boot up is complete */
 
@@ -796,7 +795,6 @@ void nx_start(void)
   /* When control is return to this point, the system is idle. */
 
   sinfo("CPU0: Beginning Idle Loop\n");
-  syslog(LOG_INFO, "CPU0: Beginning Idle Loop\n");
   for (; ; )
     {
 #if defined(CONFIG_STACK_COLORATION) && CONFIG_STACK_USAGE_SAFE_PERCENT > 0