xmlrpc: removes the event servers controller

XMLRPC API ran a XMLRPC server at port+2 in order
to provide endpoints to register an event server
in which to dump the events.

This is no longer used, so we remove it.

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>