Disabling the "Select Lanaguge" from login page

In OTN forums,one folk asked about how to hide the "select language" drop down from login page
http://forums.oracle.com/forums/thread.jspa?threadID=1116437&tstart=0

John has an excellent post on this What you have to do is just add the following tag in OracleBIData/web/config/instanceconfig.xml

https://docs.google.com/document/edit?id=19sdizGL35E1KUISUVmKAq4zcvMol7MOCvpAsC0ulyss

Restart your presentation services