[gtk-doc] configure.ac: drop duplicated status output

[Stefan Kost <stefkost src gnome org>]

commit 3a1bcc879d5db0d67456c69255689f1550992fda
Author: Stefan Sauer <ensonic users sf net>
Date:   Mon Apr 27 21:50:34 2015 +0200

    configure.ac: drop duplicated status output

 configure.ac |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5f54740..dab392f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -318,9 +318,6 @@ test "x$build_tests" != "xno" \
 test "x$enable_debug" != "xno" \
     && AC_MSG_NOTICE([** Debug tracing enabled]) \
     || AC_MSG_NOTICE([   Debug tracing disabled])
-test "x$enable_debug" != "xno" \
-    && AC_MSG_NOTICE([** Debug tracing enabled]) \
-    || AC_MSG_NOTICE([   Debug tracing disabled])
 test "x$have_yelp_tools" != "xno" \
     && AC_MSG_NOTICE([** Documentation enabled]) \
     || AC_MSG_NOTICE([   Documentation disabled])