[giow] (3) remove() is also defined on an ancestor interface, so overload it here on <select>.
Fixing https://www.w3.org/Bugs/Public/show_bug.cgi?id=20720
Affected topics: DOM APIs

git-svn-id: http://svn.whatwg.org/webapps@8192 340c8d12-0b0e-0410-8428-c7bf67bfef74