net: Kill SOCK_SLEEP_PRE and SOCK_SLEEP_POST, no users.

#define LIMIT_NETDEBUG(fmt, args...) \

	do { if (net_msg_warn && net_ratelimit()) printk(fmt,##args); } while(0)

/*

 * Macros for sleeping on a socket. Use them like this:

 *

 * SOCK_SLEEP_PRE(sk)

 * if (condition)

 * 	schedule();

 * SOCK_SLEEP_POST(sk)

 *

 * N.B. These are now obsolete and were, afaik, only ever used in DECnet

 * and when the last use of them in DECnet has gone, I'm intending to

 * remove them.

 */

#define SOCK_SLEEP_PRE(sk) 	{ struct task_struct *tsk = current; \

				DECLARE_WAITQUEUE(wait, tsk); \

				tsk->state = TASK_INTERRUPTIBLE; \

				add_wait_queue((sk)->sk_sleep, &wait); \

				release_sock(sk);

#define SOCK_SLEEP_POST(sk)	tsk->state = TASK_RUNNING; \

				remove_wait_queue((sk)->sk_sleep, &wait); \

				lock_sock(sk); \

				}

extern __u32 sysctl_wmem_max;

extern __u32 sysctl_rmem_max;