Remove conversations models from sphinx docs

docs/models.rst

@@ -62,20 +62,6 @@ The user modules contains all related models for the users.
    :members:
 
 
-Message Models
---------------
-
-.. module:: flaskbb.message.models
-
-The message modules contains all the related models for the conversations
-
-.. autoclass:: Conversation
-   :members:
-
-.. autoclass:: Message
-   :members:
-
-
 Management Models
 -----------------