parasite: remove an unused id field from parasite_dump_thread

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/parasite.h

@@ -141,7 +141,6 @@ struct parasite_dump_creds {
 };
 
 struct parasite_dump_thread {
-	int			id;
 	unsigned int		*tid_addr;
 	pid_t			tid;
 	k_rtsigset_t		blocked;

parasite-syscall.c

@@ -478,7 +478,6 @@ int parasite_dump_thread_seized(struct parasite_ctl *ctl, int id,
 	int ret;
 
 	args = parasite_args(ctl, struct parasite_dump_thread);
-	args->id = id;
 
 	if (id == 0)
 		ret = parasite_execute_daemon(PARASITE_CMD_DUMP_THREAD, ctl);