remove the deprecation warnings for the old threading API; update the docs

Reviewer: Benjamin Peterson
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index b5f997e..9cc62be 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -14,11 +14,9 @@
 
 .. note::
 
-   Some ``camelCase`` names have been converted to their underscored
-   equivalents. Others have been replaced by properties.  Using the old methods
-   in 2.6 will trigger a :exc:`DeprecationWarning` when Python is run with the
-   :option:`-3` flag and a full :exc:`DeprecationWarning` in 3.0.  The old names
-   will be removed early in the 3.x series.
+   While they are not listed below, the ``camelCase`` names used for some
+   methods and functions in this module in the Python 2.x series are still
+   supported by this module.
 
 This module defines the following functions and objects: