[libglnx] tests: drop unused variable

[Colin Walters <walters src gnome org>]

commit b923a950af1b3cfc4ba1fc877428928ffd4f38ec
Author: Jonathan Lebon <jlebon redhat com>
Date:   Wed Oct 11 20:02:56 2017 +0000

    tests: drop unused variable

 tests/test-libglnx-fdio.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)
---
diff --git a/tests/test-libglnx-fdio.c b/tests/test-libglnx-fdio.c
index 350294c..c5ff949 100644
--- a/tests/test-libglnx-fdio.c
+++ b/tests/test-libglnx-fdio.c
@@ -177,7 +177,6 @@ static void
 test_filecopy (void)
 {
   _GLNX_TEST_DECLARE_ERROR(local_error, error);
-  g_auto(GLnxTmpfile) tmpf = { 0, };
   const char foo[] = "foo";
   struct stat stbuf;