SUNRPC: Remove unused declarations

Commit c7d7ec8f ("SUNRPC: Remove svc_shutdown_net()") removed
svc_close_net() implementation but left declaration in place. Remove
it.

Commit 1f11a034 ("SUNRPC new transport for the NFSv4.1 shared
back channel") removed svc_sock_create()/svc_sock_destroy() but not
the declarations.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

include/linux/sunrpc/svcsock.h

@@ -56,7 +56,6 @@ static inline u32 svc_sock_final_rec(struct svc_sock *svsk)
 /*
  * Function prototypes.
  */
-void		svc_close_net(struct svc_serv *, struct net *);
 void		svc_recv(struct svc_rqst *rqstp);
 void		svc_send(struct svc_rqst *rqstp);
 void		svc_drop(struct svc_rqst *);
@@ -66,8 +65,6 @@ int		svc_addsock(struct svc_serv *serv, struct net *net,
 			    const struct cred *cred);
 void		svc_init_xprt_sock(void);
 void		svc_cleanup_xprt_sock(void);
-struct svc_xprt *svc_sock_create(struct svc_serv *serv, int prot);
-void		svc_sock_destroy(struct svc_xprt *);
 
 /*
  * svc_makesock socket characteristics