c711f949ba6a4f3f1383918d12a9b9600a558d57 Fix: Remove the setting of `…

…role="row"` for the header row.

https://datatables.net/forums/discussion/79934

Originally added in
DataTables/DataTablesSrc@d3de0ee
due to a Webkit bug. The body addition was removed a while back, forgot
to remove the matching one for the header.

Sync to source repo @c711f949ba6a4f3f1383918d12a9b9600a558d57

datatables.json

@@ -14,5 +14,5 @@
     ],
     "src-repo": "http://github.com/DataTables/DataTablesSrc",
     "last-tag": "2.1.7",
-    "last-sync": "e86bdad18a2ae35115ee8369bcde9023ad616b35"
+    "last-sync": "c711f949ba6a4f3f1383918d12a9b9600a558d57"
 }