Unnecessary xmlns in data sent by http:post() and put()

[Chris Hillery]

let $body := <hello>there</hello>
return http:put("http://zorbatest.lambda.nu:8080/cgi-bin/test-text", $body)

The PUT data actually sent to the HTTP server looks like this:

<hello xmlns:http-schema="http://expath.org/ns/http-client">there</hello>

The xmlns:http-schema attribute is unnecessary and probably undesirable. Same happens with http:post().