Use default license

New charter has changed license to Respec default

Author: Michael Cooper

graphics-aria/index.html

@@ -27,7 +27,6 @@
                 // if you wish the publication date to be other than today, set this
                 //publishDate:  "2014-12-11",
                 copyrightStart:  "2015",
-                license: "document",
 
                 // if there is a previously published draft, uncomment this and set its YYYY-MM-DD date
                 // and its maturity status