[libsigcplusplus/variadic_mem_fun3: 63/148] Correct some documentation.

[Murray Cumming <murrayc src gnome org>]

commit 107ca45c8998f1567050d6c64d55127cfa543511
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Jan 15 10:16:00 2016 +0100

    Correct some documentation.

 sigc++/signal.h |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)
---
diff --git a/sigc++/signal.h b/sigc++/signal.h
index cfede6f..2ae45a5 100644
--- a/sigc++/signal.h
+++ b/sigc++/signal.h
@@ -870,8 +870,6 @@ struct signal_emit<void, nil, T_arg...>
  * @p nil means that no accumulator should be used, for example if signal
  * emission returns the return value of the last slot invoked.
  *
- * You should use the more convenient unnumbered sigc::signal template.
- *
  * @ingroup signal
  */
 template <class T_return, class T_accumulator, class... T_arg>