A follow up for the fix for Bug#35164 (remove priorities on Windows).

mysys/my_wincond.c

@@ -181,7 +181,6 @@ int pthread_attr_init(pthread_attr_t *connect_att)
 {
   connect_att->dwStackSize	= 0;
   connect_att->dwCreatingFlag	= 0;
-  connect_att->priority		= 0;
   return 0;
 }
 
@@ -191,12 +190,6 @@ int pthread_attr_setstacksize(pthread_attr_t *connect_att,DWORD stack)
   return 0;
 }
 
-int pthread_attr_setprio(pthread_attr_t *connect_att,int priority)
-{
-  connect_att->priority=priority;
-  return 0;
-}
-
 int pthread_attr_destroy(pthread_attr_t *connect_att)
 {
   bzero((uchar*) connect_att,sizeof(*connect_att));