usk: The INFLIGHT flag is no longer used

It was required before we switched to socketpair restore
scheme. Now it's not required, sockets just connect to
the peer they want to.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/image.h

@@ -93,14 +93,12 @@ struct pipe_data_entry {
  */
 #define PIPE_NONALIG_DATA (15 * PAGE_SIZE)
 
-#define USK_INFLIGHT		1
-
 struct unix_sk_entry {
 	u32	id;
 	u8	type;
 	u8	state;
 	u8	namelen; /* fits UNIX_PATH_MAX */
-	u8	flags;
+	u8	pad;
 	u32	backlog;
 	u32	peer;
 	u8	name[0];

sockets.c

@@ -390,8 +390,6 @@ static int dump_one_unix(const struct socket_desc *_sk, int fd, int lfd,
 	ue.state	= sk->state;
 	ue.namelen	= sk->namelen;
 	ue.backlog	= sk->wqlen;
-
-	ue.flags	= 0;
 	ue.peer		= sk->peer_ino;
 
 	if (ue.peer) {
@@ -438,7 +436,6 @@ static int dump_one_unix(const struct socket_desc *_sk, int fd, int lfd,
 			goto err;
 		}
 
-		ue.flags	|= USK_INFLIGHT;
 		ue.peer		= e->sk_desc->sd.ino;
 
 		pr_debug("\t\tFixed inflight socket %d peer %d)\n",