Remove local pubsub 3.3.0 code and import 4.0.0 from external package

wx/lib/pubsub/policies.py

@@ -1,26 +0,0 @@
-"""
-Aggregates policies for pubsub. Mainly, related to messaging protocol.
-
-:copyright: Copyright since 2006 by Oliver Schoenborn, all rights reserved.
-:license: BSD, see LICENSE_BSD_Simple.txt for details.
-"""
-
-msgProtocolTransStage = None
-
-msgDataProtocol    = 'kwargs'
-msgDataArgName     = None
-senderKwargNameAny = False
-
-
-def setMsgDataArgName(stage, listenerArgName, senderArgNameAny=False):
-    global senderKwargNameAny
-    global msgDataArgName
-    global msgProtocolTransStage
-    senderKwargNameAny = senderArgNameAny
-    msgDataArgName = listenerArgName
-    msgProtocolTransStage = stage
-    #print('%s' % repr(policies.msgProtocolTransStage))
-    #print('%s' % repr(policies.msgDataProtocol))
-    #print('%s' % repr(policies.senderKwargNameAny))
-    #print('%s' % repr(policies.msgDataArgName))
-    #print('override "arg1" protocol arg name: %s' % argName)