vsock: Remove unused function declarations

These are never implemented since introduction in
commit d021c344 ("VSOCK: Introduce VM Sockets")
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20230729122036.32988-1-yuehaibing@huawei.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

net/vmw_vsock/vmci_transport.h

@@ -116,9 +116,6 @@ struct vmci_transport {
 	spinlock_t lock; /* protects sk. */
 };
 
-int vmci_transport_register(void);
-void vmci_transport_unregister(void);
-
 int vmci_transport_send_wrote_bh(struct sockaddr_vm *dst,
 				 struct sockaddr_vm *src);
 int vmci_transport_send_read_bh(struct sockaddr_vm *dst,