Drop stefanha's old trivial-patches repository

Michael Tokarev <mjt@tls.msk.ru> has taken over maintainership of the
trivial-patches queue.  Drop stefanha's outdated trivial-patches
repository.  When Michael gets back from vacation he may wish to add his
new repository to the buildbot.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>