Remove rogue </book> tag left in from normalizing this chapter in emacs.

Thomas G. Lockhart · Thomas G. Lockhart · commit 0cfd97ecf2ed · 1999-10-09T02:30:02.000Z
diff --git a/doc/src/sgml/jdbc.sgml b/doc/src/sgml/jdbc.sgml
@@ -2658,4 +2658,4 @@ sgml-exposed-tags:nil
 sgml-local-catalogs:"/usr/lib/sgml/CATALOG"
 sgml-local-ecat-files:nil
 End:
---></book>
+-->
