do not ENABLE_GROFF_HTML if we have no groff

do not build xorn which is Python 2

Index: configure
--- configure.orig
+++ configure
@@ -942,7 +942,6 @@ URI_VIEWER
 DOXYGEN
 UPDATE_MIME_DATABASE
 UPDATE_DESKTOP_DATABASE'
-ac_subdirs_all='xorn'
 
 # Initialize some variables set by options.
 ac_init_help=
@@ -14664,7 +14663,7 @@ $as_echo_n "checking whether $GROFF has an html driver
 $as_echo "$HAVE_GROFF_HTML" >&6; }
   fi
 
-   if test "X$HAVE_GROFF_HTML" != Xno; then
+   if test "X$HAVE_GROFF_HTML" = Xyes; then
   ENABLE_GROFF_HTML_TRUE=
   ENABLE_GROFF_HTML_FALSE='#'
 else
@@ -19608,7 +19607,6 @@ export GEDARCDIR
 
 
 
-subdirs="$subdirs xorn"
 
 
 #####################################################################
