[gnumeric] Configure: don't use AX_REQUIRE_DEFINED for now.

[Morten Welinder <mortenw src gnome org>]

commit e142a45cf33c1b2a145e79b066e6e9d4f82dd878
Author: Morten Welinder <terra gnome org>
Date:   Mon Aug 1 20:33:44 2016 -0400

    Configure: don't use AX_REQUIRE_DEFINED for now.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index daae442..93deb25 100644
--- a/configure.ac
+++ b/configure.ac
@@ -72,7 +72,7 @@ AM_MAINTAINER_MODE([enable])
 
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
 
-AX_REQUIRE_DEFINED([GTK_DOC_CHECK])
+dnl AX_REQUIRE_DEFINED([GTK_DOC_CHECK])
 GTK_DOC_CHECK
 
 dnl We use a LINGUAS file, so we need intltool >= 0.35: