Remove thirdparty/unittest2 from webkitpy and require python2.7.

Tools/Scripts/webkitpy/thirdparty/README.chromium

Index: Tools/Scripts/webkitpy/thirdparty/README.chromium
diff --git a/Tools/Scripts/webkitpy/thirdparty/README.chromium b/Tools/Scripts/webkitpy/thirdparty/README.chromium
index 67c57c337c97a74585613d87e751efc049239468..f2302d48b9eac66d6c790e1fab39db8ed183c2b5 100644
--- a/Tools/Scripts/webkitpy/thirdparty/README.chromium
+++ b/Tools/Scripts/webkitpy/thirdparty/README.chromium
@@ -56,17 +56,6 @@ Security Critical: no
 Description: used by run-webkit-tests and run-webkit-httpd to test web sockets
 Local Modifications: None
 
-Name: ordereddict
-Short Name: ordereddict
-URL: http://code.activestate.com/recipes/576669/
-Version: ?
-Date Modified: 2012-06-07
-License: BSD (?)
-License File: NOT_SHIPPED
-Security Critical: no
-Description: A backport of the OrderedDict implementation from Python 2.7
-Local Modifications: None (?)
-
 Name: pep8 - A Python style guide checker
 Short Name: pep8
 URL: http://pypi.python.org/packages/source/p/pep8/pep8-0.5.0.tar.gz#md5=512a818af9979290cd619cce8e9c2e2b
@@ -78,13 +67,3 @@ Description: Used during presubmit checks and via lint-webkitpy. There is
     overlap between pep8 and pylint, but pep8 catches a bunch of stylistic
 	issues that pylint doesn't (e.g., warning about blank lines, various whitespace issues, etc.).
 Local Modifications: None
-
-Name: unittest2 - A backport of python 2.7 unittest module for Python 2.6.
-Short Name: unittest2
-URL: http://pypi.python.org/packages/source/u/unittest2/unittest2-0.5.1.tar.gz#md5=a0af5cac92bbbfa0c3b0e99571390e0f
-Version: 0.5.1
-License: ASL
-License File: NOT_SHIPPED
-Security Critical: no
-Description: Used for all of the unit tests for webkitpy.
-Local Modifications: Deleted unittest2/test/ to save space.