Drop mention of Jython since its not currently testable.

CHANGES.rst

@@ -8,7 +8,7 @@
 - Fix command-line parsing of --verbose and --verify arguments.
   (The short versions -v and -V were parsed correctly.)
 
-- Add support for PyPy and Jython 2.7.
+- Add support for PyPy.
 
 - Fix the methods in ``ZODB.serialize`` that find object references
   under Python 2.7 (used in scripts like ``referrers``, ``netspace``,

setup.py

@@ -60,7 +60,6 @@ Programming Language :: Python :: 3.3
 Programming Language :: Python :: 3.4
 Programming Language :: Python :: Implementation :: CPython
 Programming Language :: Python :: Implementation :: PyPy
-Programming Language :: Python :: Implementation :: Jython
 Topic :: Database
 Topic :: Software Development :: Libraries :: Python Modules
 Operating System :: Microsoft :: Windows