Delete code related to Namespaces

Change-Id: I0f55e8a8a4306654bfb16926d03abdd5df68142b

mistral/actions/base.py

@@ -80,28 +80,3 @@ class Action(object):
             doesn't override this method then the action is synchronous.
         """
         return True
-
-
-class Namespace(object):
-    """Action namespace."""
-
-    def __init__(self, namespace):
-        self.name = namespace
-        self.actions = {}
-
-    def contains_action_name(self, name):
-        return name in self.actions
-
-    def get_action_class(self, name):
-        return self.actions.get(name)
-
-    def __len__(self):
-        return len(self.actions)
-
-    def log(self):
-        for ext in self.actions:
-            LOG.debug('%s:%s' % (self.name, ext))
-
-    def add(self, name, action):
-        if name not in self.actions:
-            self.actions[name] = action

mistral/services/action_manager.py

@@ -16,7 +16,6 @@ import inspect
 
 from stevedore import extension
 
-from mistral.actions import base
 from mistral.actions import generator_factory
 from mistral.actions import std_actions
 from mistral.db.v2 import api as db_api
@@ -31,18 +30,6 @@ from mistral.workbook import parser as spec_parser
 LOG = logging.getLogger(__name__)
 
 _ACTION_CTX_PARAM = 'action_context'
-_NAMESPACES = {}
-
-
-# TODO(nmakhotkin): It's not used anywhere.
-def _find_or_create_namespace(name):
-    ns = _NAMESPACES.get(name)
-
-    if not ns:
-        ns = base.Namespace(name)
-        _NAMESPACES[name] = ns
-
-    return ns
 
 
 def get_registered_actions(**kwargs):