tor-tsocks-mua.conf left over from Claws Mail removal
Originally created by @intrigeri on #10904 (Redmine)
It seems that config/chroot_local-includes/etc/tor/tor-tsocks-mua.conf
is present, and referenced in two design docs, while it is not used
anymore. Please clean this up :)
Feature Branch: 451f:tails/feature/10737+icedove_design_doc
Parent Task: #10167 (closed)