[libsigc++2/variadic_mem_fun2] retype.h: Remove comment saying it is generated.

[Murray Cumming <murrayc src gnome org>]

commit 114e87a53d2506a7176ed9ab6d6faf84b07fcb3e
Author: Murray Cumming <murrayc murrayc com>
Date:   Sat Mar 5 09:39:49 2016 +0100

    retype.h: Remove comment saying it is generated.

 sigc++/adaptors/retype.h |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/sigc++/adaptors/retype.h b/sigc++/adaptors/retype.h
index ffb2197..10ce514 100644
--- a/sigc++/adaptors/retype.h
+++ b/sigc++/adaptors/retype.h
@@ -1,7 +1,6 @@
-// -*- c++ -*-
-/* Do not edit! -- generated file */
 #ifndef _SIGC_ADAPTORS_RETYPE_H_
 #define _SIGC_ADAPTORS_RETYPE_H_
+
 #include <sigc++/adaptors/adaptor_trait.h>
 #include <sigc++/functors/ptr_fun.h>
 #include <sigc++/functors/mem_fun.h>