Removed unused modules and fixed bugs in error handling.

Author: ianlewis

msgpackrpc/session.py

@@ -1,8 +1,5 @@
-import msgpack
-
 from msgpackrpc import Loop
 from msgpackrpc import message
-from msgpackrpc.error import RPCError
 from msgpackrpc.future import Future
 from msgpackrpc.transport import tcp
 from msgpackrpc.compat import iteritems

msgpackrpc/transport/tcp.py

@@ -1,11 +1,9 @@
-import socket
-
 import msgpack
 from tornado import netutil
 from tornado.iostream import IOStream
 
 import msgpackrpc.message
-from msgpackrpc import error
+from msgpackrpc.error import RPCError
 
 
 class BaseSocket(object):