tipc: Remove unused struct declaration

struct tipc_name_table in core.h is not used. Remove this declaration.
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Reviewed-by: Tung Nguyen <tung.q.nguyen@endava.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/core.h

@@ -72,7 +72,6 @@ struct tipc_node;
 struct tipc_bearer;
 struct tipc_bc_base;
 struct tipc_link;
-struct tipc_name_table;
 struct tipc_topsrv;
 struct tipc_monitor;
 #ifdef CONFIG_TIPC_CRYPTO