Remove the generation of all documentation in one document.

documentation/testing.sgml

diff --git a/documentation/testing.sgml b/documentation/testing.sgml
index e62e0d4..2a3ce36 100644
--- a/documentation/testing.sgml
+++ b/documentation/testing.sgml
@@ -520,6 +520,6 @@
 <!-- Keep this comment at the end of the file
 Local variables:
 mode: sgml
-sgml-parent-document:("wine-doc.sgml" "set" "book" "part" "chapter" "")
+sgml-parent-document:("wine-devel.sgml" "set" "book" "part" "chapter" "")
 End:
 -->