Update the tests to work with oragono

tests/end_to_end/scenarios/simple_channel_join_fixed.py

@@ -5,7 +5,6 @@ conf = "fixed_server"
 scenario = (
     send_stanza("<presence from='{jid_one}/{resource_one}' to='#foo@{biboumi_host}/{nick_one}' ><x xmlns='http://jabber.org/protocol/muc'/></presence>"),
     sequences.connection("irc.localhost", '{jid_one}/{resource_one}', fixed_irc_server=True),
-    expect_stanza("/message/body[text()='Mode #foo [+nt] by {irc_host_one}']"),
     expect_stanza("/presence[@to='{jid_one}/{resource_one}'][@from='#foo@{biboumi_host}/{nick_one}']/muc_user:x/muc_user:item[@affiliation='admin'][@role='moderator']",
                   "/presence/muc_user:x/muc_user:status[@code='110']"),
     expect_stanza("/message[@from='#foo@{biboumi_host}'][@type='groupchat']/subject[not(text())]"),