removed testrunner.py from distribution

utilities/README.txt

@@ -8,12 +8,6 @@ To get detailed usage information, run any of these scripts without arguments:
     ZPublisher.Client.  It provides some examples of pitfalls
     and their work-arounds.
 
-  testrunner.py -- A Zope test suite utility.
-
-    The testrunner utility is used to execute PyUnit test suites. You can
-    find more information on PyUnit at http://pyunit.sourceforge.net. This
-    utility should be run from the root of your Zope installation.
-
   check_catalog.py -- Perform some consistency tests on a ZCatalog instance
 
   mkzopeinstance.py -- create a Zope instance home