readwrite_after_connection_destroyed test should not request client auth
readwrite_after_connection_destroyed test should not request client auth

This isn't supposed to be a client auth test. I'm not sure how it is
that I wound up with this here; you'd think I copypasted it, but we
didn't have any other tests using G_TLS_AUTHENTICATION_REQUESTED.

Anyway, it makes no difference to the test results. It's just not what
we're trying to test here.

GNOME/glib-networking,GNOME/glib-networking,GNOME/glib-networking