Replace six.iteritems with iter()

We don't need six for this.

Change-Id: I19673bf47ef74b5e67c4197d31600c73c025ab4c

gerritbot/bot.py

@@ -53,7 +53,6 @@ import irc.bot
 import logging.config
 import os
 import re
-import six
 import ssl
 import sys
 import threading
@@ -283,7 +282,7 @@ class ChannelConfig(object):
         self.projects = {}
         self.events = {}
         self.branches = {}
-        for channel, val in six.iteritems(self.data):
+        for channel, val in iter(self.data.items()):
             for event in val['events']:
                 event_set = self.events.get(event, set())
                 event_set.add(channel)

requirements.txt

@@ -4,4 +4,3 @@ gerritlib
 irc
 pyyaml
 python-daemon
-six>=1.6.0