[glibmm] Tests: Remove an unused variable.

[Murray Cumming <murrayc src gnome org>]

commit 726946cfc5792f713e58d6eea8e507548476fd3f
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Dec 12 10:27:40 2016 +0100

    Tests: Remove an unused variable.
    
    Noticed by cppcheck.

 tests/glibmm_nodetree/main.cc |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/tests/glibmm_nodetree/main.cc b/tests/glibmm_nodetree/main.cc
index 0554c48..c4033de 100644
--- a/tests/glibmm_nodetree/main.cc
+++ b/tests/glibmm_nodetree/main.cc
@@ -14,7 +14,6 @@ node_build_string(type_nodetree_string& node, std::string& string)
 int
 main()
 {
-  std::list<std::string> alma;
   std::string tstring, cstring;
   type_nodetree_string* root;
   type_nodetree_string* node;