Revert "dbBkpt: atexit"

src/ioc/db/dbBkpt.c

@@ -48,7 +48,6 @@
 #include "dbDefs.h"
 #include "ellLib.h"
 #include "epicsEvent.h"
-#include "epicsExit.h"
 #include "epicsMutex.h"
 #include "epicsThread.h"
 #include "epicsTime.h"
@@ -252,11 +251,6 @@ static long FIND_CONT_NODE(
   return(0);
 }
 
-static void dbBkptExit(void *junk) {
-    epicsMutexDestroy(bkpt_stack_sem);
-    bkpt_stack_sem = NULL;
-}
-
 /*
  *  Initialise the breakpoint stack
  */
@@ -265,7 +259,6 @@ void dbBkptInit(void)
     if (! bkpt_stack_sem) {
         bkpt_stack_sem = epicsMutexMustCreate();
         lset_stack_count = 0;
-        epicsAtExit(dbBkptExit, NULL);
     }
 }