cleaned up imports

session.py

@@ -1,16 +1,16 @@
-from Yowsup.connectionmanager import YowsupConnectionManager
-
-from Spectrum2 import protocol_pb2
-
-from roster import Roster
-from threading import Timer
-from group import Group
-
-
-import base64
+import utils
 import logging
 import urllib
-import e4u
+import time
+
+from Yowsup.connectionmanager import YowsupConnectionManager
+from Spectrum2 import protocol_pb2
+
+from buddy import BuddyList
+from threading import Timer
+from group import Group
+from bot import Bot
+from constants import *
 
 class Session: