Xpra: Ticket #2159: remove rpc calls

It had been broken for quite a while and no-one noticed! See r21758.



Mon, 22 Jul 2019 16:43:53 GMT - Antoine Martin: status, milestone changed


Thu, 06 Feb 2020 03:19:10 GMT - Antoine Martin: status changed; resolution set

Keeping it as it is used for dbus rpc.


Sat, 23 Jan 2021 05:43:46 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2159