[libsigcplusplus] compose: Remove unnecessary getter/setter aliases.

[Murray Cumming <murrayc src gnome org>]

commit 9994abc97fd1064a5321954e3f5e6bc6ab47ce19
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Apr 13 22:31:12 2016 +0200

    compose: Remove unnecessary getter/setter aliases.

 sigc++/adaptors/compose.h |   13 +++----------
 1 files changed, 3 insertions(+), 10 deletions(-)
---
diff --git a/sigc++/adaptors/compose.h b/sigc++/adaptors/compose.h
index bd4ef93..79a94dc 100644
--- a/sigc++/adaptors/compose.h
+++ b/sigc++/adaptors/compose.h
@@ -43,9 +43,6 @@ namespace sigc
 template <class T_setter, class T_getter>
 struct compose1_functor : public adapts<T_setter>
 {
-  using setter_type = T_setter;
-  using getter_type = T_getter;
-
   decltype(auto) operator()() { return this->functor_(get_()); }
 
   template <class... T_arg>
@@ -64,7 +61,7 @@ struct compose1_functor : public adapts<T_setter>
   {
   }
 
-  getter_type get_; // public, so that visit_each() can access it
+  T_getter get_; // public, so that visit_each() can access it
 };
 
 /** Adaptor that combines three functors.
@@ -84,10 +81,6 @@ private:
   using adaptor_type = typename adapts<T_setter>::adaptor_type;
 
 public:
-  using setter_type = T_setter;
-  using getter1_type = T_getter1;
-  using getter2_type = T_getter2;
-
   decltype(auto) operator()() { return this->functor_(get1_(), get2_()); }
 
   template <class... T_arg>
@@ -108,8 +101,8 @@ public:
   {
   }
 
-  getter1_type get1_; // public, so that visit_each() can access it
-  getter2_type get2_; // public, so that visit_each() can access it
+  T_getter1 get1_; // public, so that visit_each() can access it
+  T_getter2 get2_; // public, so that visit_each() can access it
 };
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS