tree-wide: remove locking around openpty()

src/lxc/conf.c

@@ -797,10 +797,8 @@ int lxc_allocate_ttys(const char *name, struct lxc_conf *conf)
 	for (i = 0; i < conf->tty; i++) {
 		struct lxc_pty_info *pty_info = &tty_info->pty_info[i];
 
-		process_lock();
 		ret = openpty(&pty_info->master, &pty_info->slave,
 			      pty_info->name, NULL, NULL);
-		process_unlock();
 		if (ret) {
 			SYSERROR("failed to create pty device number %d", i);
 			tty_info->nbtty = i;

src/lxc/console.c

@@ -603,11 +603,9 @@ int lxc_pty_create(struct lxc_console *console)
 {
 	int ret, saved_errno;
 
-	process_lock();
 	ret = openpty(&console->master, &console->slave, console->name, NULL,
 		      NULL);
 	saved_errno = errno;
-	process_unlock();
 	if (ret < 0) {
 		ERROR("%s - Failed to allocate a pty", strerror(saved_errno));
 		return -1;