[libsigcplusplus/variadic_mem_fun2] hide.h: Remove unnecessary include.

[Murray Cumming <murrayc src gnome org>]

commit be3a851d18e8d8f2e7486624dbc3b7e0430c18ed
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Mar 7 09:40:25 2016 +0100

    hide.h: Remove unnecessary include.

 sigc++/adaptors/hide.h |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/sigc++/adaptors/hide.h b/sigc++/adaptors/hide.h
index bae6cc9..0d98dd3 100644
--- a/sigc++/adaptors/hide.h
+++ b/sigc++/adaptors/hide.h
@@ -2,7 +2,6 @@
 #define _SIGC_ADAPTORS_HIDE_H_
 
 #include <sigc++/adaptors/adaptor_trait.h>
-#include <sigc++/tuple-utils/tuple_cat.h>
 #include <sigc++/tuple-utils/tuple_end.h>
 #include <sigc++/tuple-utils/tuple_start.h>