Don't WARN about files in WEB-INF/classes/META-INF

Currently we log a WARN message if we find any files, other than persistence.xml, in .war/WEB-INF/classes/META-INF folder. We need to get rid of the WARN since Weld looks for beans.xml in that location, although CDI doesn't mandate it, but as per the folks on seam-dev mailing list, all application servers look for beans.xml in this location (including previous version on AS). From what I understand, even AS7 looks for beans.xml in this location currently. So this WARN message is misleading and unnecessary. Let's just allow the individual techs to pick up files from this location, as they wish and get rid of this WARN.