Clean up imports to be pyflakes-checkable. fixes #2450

Signed-off-by: Daira Hopwood <daira@jacaranda.org>

qa/rpc-tests/test_framework/comptool.py

@@ -4,10 +4,13 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #
 
-from mininode import *
+from mininode import CBlock, CTransaction, CInv, NodeConn, NodeConnCB, \
+    msg_inv, msg_getheaders, msg_ping, msg_mempool, mininode_lock, MAX_INV_SZ
 from blockstore import BlockStore, TxStore
 from util import p2p_port
 
+import time
+
 '''
 This is a tool for comparing two or more bitcoinds to each other
 using a script provided.
@@ -25,8 +28,6 @@ generator that returns TestInstance objects.  See below for definition.
 # on_getheaders: provide headers via BlockStore
 # on_getdata: provide blocks via BlockStore
 
-global mininode_lock
-
 def wait_until(predicate, attempts=float('inf'), timeout=float('inf')):
     attempt = 0
     elapsed = 0