Remove link to ODBCng project from the docs.

This backatches Heikki's patch in 140a4fbf
to make sure the documentation on the website gets updated, since
we're regularly receiving complains about this link.

doc/src/sgml/external-projects.sgml

@@ -102,13 +102,6 @@
       <entry><ulink url="http://npgsql.projects.postgresql.org/">http://npgsql.projects.postgresql.org/</ulink></entry>
      </row>
 
-     <row>
-      <entry>ODBCng</entry>
-      <entry>ODBC</entry>
-      <entry>An alternative ODBC driver</entry>
-      <entry><ulink url="http://projects.commandprompt.com/public/odbcng/">http://projects.commandprompt.com/public/odbcng/</ulink></entry>
-     </row>
-
      <row>
       <entry>pgtclng</entry>
       <entry>Tcl</entry>
@@ -119,7 +112,7 @@
      <row>
       <entry>psqlODBC</entry>
       <entry>ODBC</entry>
-      <entry>The most commonly-used ODBC driver</entry>
+      <entry>ODBC driver</entry>
       <entry><ulink url="http://psqlodbc.projects.postgresql.org/">http://psqlodbc.projects.postgresql.org/</ulink></entry>
      </row>