don't expose default servers and ports in __init__

gui/qt/network_dialog.py

@@ -27,7 +27,7 @@ from PyQt4.QtGui import *
 from PyQt4.QtCore import *
 
 from electrum.i18n import _
-from electrum import DEFAULT_PORTS
+from electrum.network import DEFAULT_PORTS
 from electrum.network import serialize_server, deserialize_server
 
 from util import *

lib/__init__.py

@@ -2,7 +2,7 @@ from version import ELECTRUM_VERSION
 from util import format_satoshis, print_msg, print_error, set_verbosity
 from wallet import Synchronizer, WalletStorage, Wallet, Imported_Wallet
 from coinchooser import COIN_CHOOSERS
-from network import Network, DEFAULT_SERVERS, DEFAULT_PORTS, pick_random_server
+from network import Network, pick_random_server
 from interface import Connection, Interface
 from simple_config import SimpleConfig, get_config, set_config
 import bitcoin