net/tls: Remove unused function declarations

Commit 3c4d7559 ("tls: kernel TLS support") declared but never implemented
these functions.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tls/tls.h

@@ -87,10 +87,6 @@ void tls_ctx_free(struct sock *sk, struct tls_context *ctx);
 void update_sk_prot(struct sock *sk, struct tls_context *ctx);
 
 int wait_on_pending_writer(struct sock *sk, long *timeo);
-int tls_sk_query(struct sock *sk, int optname, char __user *optval,
-		 int __user *optlen);
-int tls_sk_attach(struct sock *sk, int optname, char __user *optval,
-		  unsigned int optlen);
 void tls_err_abort(struct sock *sk, int err);
 
 int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx);