Fixed linter

src/tests/mock/bitmessagemock.py

@@ -1,2 +1,3 @@
 def main():
-    pass
+    """Mock main function"""
+    pass

src/tests/mock/inventory.py

@@ -3,6 +3,7 @@
 # TODO make this dynamic, and watch out for frozen, like with messagetypes
 from singleton import Singleton
 
+
 # pylint: disable=old-style-class,too-few-public-methods
 @Singleton
 class MockInventory():

src/tests/mock/network/connectionpool.py

@@ -3,12 +3,11 @@
 """
 import logging
 
-import asyncore_pollchoose as asyncore
-from bmconfigparser import BMConfigParser
 from singleton import Singleton
 
 logger = logging.getLogger('default')
 
+
 # pylint: disable=too-few-public-methods
 @Singleton
 class MockBMConnectionPool(object):